Category: iodides-buliding-blocks

Garain, Swadhin et al. published their research in Chemical Science in 2022 | CAS: 3268-21-1

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles. In the chemical industry, alkyl iodides serve as excellent alkylating agents and, specifically, methyl iodide is used as a methylating agent in the synthesis of various pharmaceutical drugs.COA of Formula: C10H12I2

Room temperature charge-transfer phosphorescence from organic donor-acceptor Co-crystals was written by Garain, Swadhin;Ansari, Shagufi Naz;Kongasseri, Anju Ajayan;Chandra Garain, Bidhan;Pati, Swapan K.;George, Subi J.. And the article was included in Chemical Science in 2022.COA of Formula: C10H12I2 This article mentions the following:

Engineering the electronic excited state manifolds of organic mols. can give rise to various functional outcomes, including ambient triplet harvesting, that has received prodigious attention in the recent past. Herein, we introduce a modular, non-covalent approach to bias the entire excited state landscape of an organic mol. using tunable ‘through-space charge-transfer’ interactions with appropriate donors. Although charge-transfer (CT) donor-acceptor complexes have been extensively explored as functional and supramol. motifs in the realm of soft organic materials, they could not imprint their potentiality in the field of luminescent materials, and it still remains as a challenge. Thus, in the present study, we investigate the modulation of the excited state emission characteristics of a simple pyromellitic diimide derivative on complexation with appropriate donor mols. of varying electronic characteristics to demonstrate the selective harvesting of emission from its locally excited (LE) and CT singlet and triplet states. Remarkably, co-crystallization of the pyromellitic diimide with heavy-atom substituted and electron-rich aromatic donors leads to an unprecedented ambient CT phosphorescence with impressive efficiency and notable lifetime. Further, gradual minimizing of the electron-donating strength of the donors from 1,4-diiodo-2,3,5,6-tetramethylbenzene (or 1,2-diiodo-3,4,5,6-tetramethylbenzene) to 1,2-diiodo-4,5-dimethylbenzene and 1-bromo-4-iodobenzene modulates the source of ambient phosphorescence emission from the 3CT excited state to 3LE excited state. Through comprehensive spectroscopic, theor. studies, and single-crystal analyses, we elucidate the unparalleled role of intermol. donor-acceptor interactions to toggle between the emissive excited states and stabilize the triplet excitons. We envisage that the present study will be able to provide new and innovative dimensions to the existing mol. designs employed for triplet harvesting. In the experiment, the researchers used many compounds, for example, 1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1COA of Formula: C10H12I2).

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles. In the chemical industry, alkyl iodides serve as excellent alkylating agents and, specifically, methyl iodide is used as a methylating agent in the synthesis of various pharmaceutical drugs.COA of Formula: C10H12I2

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Gao, Pan et al. published their research in Angewandte Chemie, International Edition in 2022 | CAS: 10297-05-9

1-Chloro-4-iodobutane (cas: 10297-05-9) belongs to iodide derivatives. Generally organic iodides can be divided into two classes of alkyl iodides and aryl iodides. Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Computed Properties of C4H8ClI

Mechanochemically Generated Calcium-Based Heavy Grignard Reagents and Their Application to Carbon-Carbon Bond-Forming Reactions was written by Gao, Pan;Jiang, Julong;Maeda, Satoshi;Kubota, Koji;Ito, Hajime. And the article was included in Angewandte Chemie, International Edition in 2022.Computed Properties of C4H8ClI This article mentions the following:

Here, a mechanochem. technique using ball milling allows the generation of calcium-based heavy Grignard reagents from aryl halides and com. available calcium metal without complicated pre-activation processes was showed. Notably, all exptl. operations can be carried out in air. Our operationally simple protocol enables the rapid development of novel cross-electrophile-coupling reactions mediated by arylcalcium nucleophiles, which are rather difficult using conventional Grignard reagents. This method will allow synthetic chemists to readily access the novel and unique reactivity of organocalcium nucleophiles. In the experiment, the researchers used many compounds, for example, 1-Chloro-4-iodobutane (cas: 10297-05-9Computed Properties of C4H8ClI).

1-Chloro-4-iodobutane (cas: 10297-05-9) belongs to iodide derivatives. Generally organic iodides can be divided into two classes of alkyl iodides and aryl iodides. Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Computed Properties of C4H8ClI

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Zhang, Xiaomin et al. published their research in Organic Letters in 2015 | CAS: 5460-32-2

4-Iodo-1,2-dimethoxybenzene (cas: 5460-32-2) belongs to iodide derivatives. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Recommanded Product: 4-Iodo-1,2-dimethoxybenzene

New Reagent for Highly Efficient Synthesis of Trifluoromethyl-Substituted Arenes and Heteroarenes was written by Zhang, Xiaomin;Wang, Jian;Wan, Zehong. And the article was included in Organic Letters in 2015.Recommanded Product: 4-Iodo-1,2-dimethoxybenzene This article mentions the following:

A new reagent trimethylsilyl chlorodifluoroacetate (TCDA) is reported for the introduction of a -CF3 group to arenes and heteroarenes. Compared with current known reagents, TCDA shows very broad scope with respect to electron-deficient, -neutral, and -rich aryl/heteroaryl iodides as well as excellent functional group tolerance, including ester, amide, aldehyde, hydroxyl, and carboxylic acid. In the experiment, the researchers used many compounds, for example, 4-Iodo-1,2-dimethoxybenzene (cas: 5460-32-2Recommanded Product: 4-Iodo-1,2-dimethoxybenzene).

4-Iodo-1,2-dimethoxybenzene (cas: 5460-32-2) belongs to iodide derivatives. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Recommanded Product: 4-Iodo-1,2-dimethoxybenzene

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Ke, Fang et al. published their research in Organic & Biomolecular Chemistry in 2018 | CAS: 220185-63-7

4,5-Dichloro-2-iodoaniline (cas: 220185-63-7) belongs to iodide derivatives. Organic iodides are organic compounds containing a carbon-iodine (C-I) bond. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I. This periodic order also follows the atomic radius of halogens and the length of the carbon-halogen bond.Application of 220185-63-7

Synthesis of benzimidazoles by CuI-catalyzed three-component reaction of 2-haloaniline, ammonia and aldehyde in water was written by Ke, Fang;Zhang, Peng;Lin, Chen;Lin, Xiaoyan;Xu, Jianhua;Zhou, Xiangge. And the article was included in Organic & Biomolecular Chemistry in 2018.Application of 220185-63-7 This article mentions the following:

An efficient copper-catalyzed three-component reaction of 2-haloaniline, ammonia and aldehyde for the synthesis of benzimidazoles I [R1 = H, 5-Me, 5-Cl, 5-NO2, 5,6-di-Cl, 5-Br; R2 = i-Pr, Ph, 2-pyridyl, etc.] with 1,10-phenanthroline as the ligand was developed. In this copper catalytic system, a new reaction mechanism was developed and neat water was used as the solvent. A variety of substituted benzimidazole derivatives were obtained in yields up to 95% with diverse functional group tolerance. In the experiment, the researchers used many compounds, for example, 4,5-Dichloro-2-iodoaniline (cas: 220185-63-7Application of 220185-63-7).

4,5-Dichloro-2-iodoaniline (cas: 220185-63-7) belongs to iodide derivatives. Organic iodides are organic compounds containing a carbon-iodine (C-I) bond. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I. This periodic order also follows the atomic radius of halogens and the length of the carbon-halogen bond.Application of 220185-63-7

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Li, Ling et al. published their research in Organic Letters in 2021 | CAS: 20776-54-9

2-Amino-4-iodobenzoic acid (cas: 20776-54-9) belongs to iodide derivatives. Generally organic iodides can be divided into two classes of alkyl iodides and aryl iodides. Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics. Polyiodoorganic compounds are sometimes employed as X-ray contrast agents, in fluoroscopy, a type of medical imaging. This application exploits the X-ray absorbing ability of the heavy iodine nucleus.Category: iodides-buliding-blocks

Preparation and Application of α-Imino Ketones through One-Pot Tandem Reactions Based on Heyns Rearrangement was written by Li, Ling;Zhang, Shiqi;Deng, Xiongfei;Li, Guangxun;Tang, Zhuo;Zhao, Gang. And the article was included in Organic Letters in 2021.Category: iodides-buliding-blocks This article mentions the following:

A metal-free and operationally simple strategy was developed to generate α-imino ketones with high regioselectivity. Meanwhile, the method allowed for the preparation of various N,O-ketals with high regioselectivities and diastereoselectivities through cascade reactions in one pot. In the experiment, the researchers used many compounds, for example, 2-Amino-4-iodobenzoic acid (cas: 20776-54-9Category: iodides-buliding-blocks).

2-Amino-4-iodobenzoic acid (cas: 20776-54-9) belongs to iodide derivatives. Generally organic iodides can be divided into two classes of alkyl iodides and aryl iodides. Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics. Polyiodoorganic compounds are sometimes employed as X-ray contrast agents, in fluoroscopy, a type of medical imaging. This application exploits the X-ray absorbing ability of the heavy iodine nucleus.Category: iodides-buliding-blocks

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Missailidis, Sotiris’s team published research in Oncology Research in 13 | CAS: 606-55-3

Oncology Research published new progress about 606-55-3. 606-55-3 belongs to iodides-buliding-blocks, auxiliary class Quinoline,Salt, name is 1-Ethyl-2-methylquinolin-1-ium iodide, and the molecular formula is C12H14IN, Computed Properties of 606-55-3.

Missailidis, Sotiris published the artcileAntitumor polycyclic acridines. Part 12. Physical and biological properties of 8,13-diethyl-6-methylquino[4,3,2-kl]acridinium iodide: a lead compound in anticancer drug design, Computed Properties of 606-55-3, the publication is Oncology Research (2002), 13(3), 175-189, database is CAplus and MEDLINE.

The biophys. and biol. characterization of 8,13-diethyl-6-methylquino[4,3,2-k1]acridinium iodide (6) is reported. The compound binds to DNA, as measured by UV, fluorescence, and CD studies, and stabilizes the double helix and higher order DNA structures (DNA triplexes and quadruplexes) against thermal denaturation. Unlike many DNA ligands, (6) shows no specificity for binding to specific base pair combinations and does not inhibit topoisomerase I (topo I) or topo II activity. Furthermore, the biol. fingerprint elicited by (6) in in vitro evaluations does not compare with clin. agents of the topo II inhibition class. The compound provokes cell cycle arrest in response to DNA damage and the biol. sequelae are dependent on the p53 status of the cell line. DNA damage by (6) up-regulates p53 and p21CIP/WAF1 proteins. The unusual structure of (6) and its ease of synthesis in a one-pot reaction are features that are being exploited in the design and development of a new series of G-quadruplex stabilizing telomerase inhibitors. However, although the second-generation compounds that resulted from (6) present strong telomerase inhibition, (6) in itself presents yet a different mode of action, with a strong preference for triplex DNA, sequences often found in a number of genes.

Oncology Research published new progress about 606-55-3. 606-55-3 belongs to iodides-buliding-blocks, auxiliary class Quinoline,Salt, name is 1-Ethyl-2-methylquinolin-1-ium iodide, and the molecular formula is C12H14IN, Computed Properties of 606-55-3.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Kratky, Martin’s team published research in Current Topics in Medicinal Chemistry (Sharjah, United Arab Emirates) in 20 | CAS: 39115-95-2

Current Topics in Medicinal Chemistry (Sharjah, United Arab Emirates) published new progress about 39115-95-2. 39115-95-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Hydrazine,Amine,Benzene,Hydrazide,Amide, name is 4-Iodobenzohydrazide, and the molecular formula is C7H7IN2O, Related Products of iodides-buliding-blocks.

Kratky, Martin published the artcileNovel Iodinated Hydrazide-hydrazones and their Analogues as Acetyl- and Butyrylcholinesterase Inhibitors, Related Products of iodides-buliding-blocks, the publication is Current Topics in Medicinal Chemistry (Sharjah, United Arab Emirates) (2020), 20(23), 2106-2117, database is CAplus and MEDLINE.

Background: Hydrazide-hydrazones have been known as scaffold with various biol. activities including inhibition of acetyl- (AChE) and butyrylcholinesterase (BuChE). Cholinesterase inhibitors are mainstays of dementias treatment. Objective: Twenty-five iodinated hydrazide-hydrazones and their analogs were designed as potential central AChE and BuChE inhibitors. Methods: Hydrazide-hydrazones were synthesized from 4-substituted benzohydrazides and 2-/4- hydroxy-3,5-diiodobenzaldehydes. The compounds were investigated in vitro for their potency to inhibit AChE from elec. eel and BuChE from equine serum using Ellmans method. We calculated also physicochem. and structural parameters for CNS delivery. Results: The derivatives exhibited a moderate dual inhibition with IC50 values ranging from 15.1-140.5 and 35.5 to 170.5 μmol.L-1 for AChE and BuChE, resp. Generally, the compounds produced a balanced or more potent inhibition of AChE. N′-[(E)-(4-Hydroxy-3,5-diiodophenyl)methylidene]-4- nitrobenzohydrazide 2k and 4-fluoro-N′-(2-hydroxy-3,5-diiodobenzyl)benzohydrazide 3a were the most potent inhibitors of AChE and BuChE, resp. Structure-activity relationships were established, and mol. docking studies confirmed interaction with enzymes. Conclusion: Many novel hydrazide-hydrazones showed lower IC50 values than rivastigmine against AChE and some of them were comparable for BuChE to this drug used for the treatment of dementia. They interact with cholinesterases via non-covalent binding into the active site. Based on the BOILEDEgg approach, the majority of the derivatives met the criteria for blood-brain-barrier permeability.

Current Topics in Medicinal Chemistry (Sharjah, United Arab Emirates) published new progress about 39115-95-2. 39115-95-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Hydrazine,Amine,Benzene,Hydrazide,Amide, name is 4-Iodobenzohydrazide, and the molecular formula is C7H7IN2O, Related Products of iodides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Pflegr, Vaclav’s team published research in Pharmaceuticals in 15 | CAS: 39115-95-2

Pharmaceuticals published new progress about 39115-95-2. 39115-95-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Hydrazine,Amine,Benzene,Hydrazide,Amide, name is 4-Iodobenzohydrazide, and the molecular formula is C7H7IN2O, SDS of cas: 39115-95-2.

Pflegr, Vaclav published the artcile5-Aryl-1,3,4-oxadiazol-2-amines Decorated with Long Alkyl and Their Analogues: Synthesis, Acetyl- and Butyrylcholinesterase Inhibition and Docking Study, SDS of cas: 39115-95-2, the publication is Pharmaceuticals (2022), 15(4), 400, database is CAplus and MEDLINE.

The compounds 5-aryl-1,3,4-oxadiazoles/thiadiazols decorated with dodecyl linked via nitrogen, sulfur or directly to this heterocycle I [R = Ph, 4-MeC6H4, 4-tBuC6H4, etc.,; X = O, S; Y = NH, S] was designed as potential inhibitors of AChE and BChE. Oxadiazoles/thiadiazols derivatives I were prepared from hydrazides by reaction with dodecyl isocyanate to form hydrazine-1-carboxamides II (yields 67-98%) followed by cyclization using p-toluenesulfonyl chloride and triethylamine in 41-100% yields. The derivatives I were screened for inhibition of AChE and BChE using Ellman’s spectrophotometric method. The compounds I showed a moderate dual inhibition with IC50 values of 12.8-99.2 for AChE and from 53.1μM for BChE. All the heterocycles I were more efficient inhibitors of AChE. The most potent inhibitor, N-dodecyl-5-(pyridin-4-yl)-1,3,4-thiadiazol-2-amine I [R =4-pyridyl, X= S, Y = NH] was subjected to advanced reversibility and type of inhibition evaluation. Structure-activity relationships of heterocycles I were identified. Many oxadiazoles I showed lower IC50 values against AChE than established drug rivastigmine. According to mol. docking, the compounds I interact non-covalently with AChE and BChE and block entry into enzyme gorge and catalytic site, resp.

Pharmaceuticals published new progress about 39115-95-2. 39115-95-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Hydrazine,Amine,Benzene,Hydrazide,Amide, name is 4-Iodobenzohydrazide, and the molecular formula is C7H7IN2O, SDS of cas: 39115-95-2.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Poli, Rinaldo’s team published research in Chemistry – A European Journal in 11 | CAS: 31253-08-4

Chemistry – A European Journal published new progress about 31253-08-4. 31253-08-4 belongs to iodides-buliding-blocks, auxiliary class Iodide,Ester, name is Ethyl 2-Iodopropionate, and the molecular formula is C5H9IO2, Quality Control of 31253-08-4.

Poli, Rinaldo published the artcileAn experimental and computational study on the effect of Al(OiPr)3 on atom-transfer radical polymerization and on the catalyst-dormant-chain halogen exchange, Quality Control of 31253-08-4, the publication is Chemistry – A European Journal (2005), 11(8), 2537-2548, database is CAplus and MEDLINE.

Compound Al(OiPr)3 is shown to catalyze the halide-exchange process leading from [Mo(Cp)Cl2(iPrN=CH-CH=NiPr)] and CH3CH-(X)COOEt (X=Br, I) to the mixed-halide complexes [Mo(Cp)ClX(iPrN=CH-CH=NiPr)]. No significant acceleration is observed for the related exchange between [MoX3(PMe3)3] (X=Cl, I) and PhCH(Br)CH3, by analogy to a previous report dealing with the RuII complex [RuCl2(PPh3)3]. A DFT computation study, carried out on the model complexes [Mo(Cp)Cl2(PH3)2], [MoCl3(PH3)3], and [RuCl2(PH3)3], and on the model initiators CH3CH(Cl)COOCH3, CH3Cl, and CH3Br, reveals that the 16-electron RuII complex is able to coordinate the organic halide RX in a slightly exothermic process to yield saturated, diamagnetic [RuCl2(PH3)3(RX)] adducts. The 15-electron [MoCl3(PH3)3] complex is equally capable of forming an adduct, i.e., the 17-electron [MoCl3(PH3)3(CH3Cl)] complex with a spin doublet configuration, although the process is endothermic, because it requires an energetically costly electron-pairing process. The interaction between the 17-electron [Mo(Cp)Cl2(PH3)2] complex and CH3Cl, is repulsive and does not lead to a stable 19-electron adduct. The [RuCl2(PH3)3(CH3X)] system leads to an isomeric complex [RuClX(PH3)3(CH3Cl)] by internal nucleophilic substitution at the carbon atom. The transition state of this process for X=Cl (degenerate exchange) is located at lower energy than the transition state required for halogen-atom transfer leading to [RuCl3(PH3)3] and the free radical CH3. On the basis of these results, the uncatalyzed halide exchange is interpreted as the result of a competitive SNi process, whose feasibility depends on the electronic configuration of the transition-metal complex. The catalytic action of Al(OiPr)3 on atom-transfer radical polymerization (and on halide exchange for the 17-electron half-sandwich MoIII complex) results from a more favorable Lewis acid-base interaction with the oxidized metal complex, in which the transferred halogen atom is bound to a more electro-pos. element. This conclusion derives from DFT studies of the model [Al(OCH3)3]n (n=1,2,3,4) compounds, and on the interaction of Al(OCH3)3 with CH3Cl and with the [Mo(Cp)Cl3(PH3)2] and [RuCl3(PH3)3] complexes.

Chemistry – A European Journal published new progress about 31253-08-4. 31253-08-4 belongs to iodides-buliding-blocks, auxiliary class Iodide,Ester, name is Ethyl 2-Iodopropionate, and the molecular formula is C5H9IO2, Quality Control of 31253-08-4.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Poli, Rinaldo’s team published research in Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) in 46 | CAS: 31253-08-4

Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) published new progress about 31253-08-4. 31253-08-4 belongs to iodides-buliding-blocks, auxiliary class Iodide,Ester, name is Ethyl 2-Iodopropionate, and the molecular formula is C5H9IO2, Name: Ethyl 2-Iodopropionate.

Poli, Rinaldo published the artcileNew mechanistic insights into ATRP using molybdenum coordination compounds, Name: Ethyl 2-Iodopropionate, the publication is Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) (2005), 46(2), 305-306, database is CAplus.

Atom transfer radical polymerization (ATPR) of Me acrylate (MA) using the same halogen on both the Mo complex catalyst (CpMoX2(iPr2dad); X = Cl or iodine; dad = diazadiene) and the initiator (MeCHYCO2Et; Y = Cl or iodine) was unsuccessful when the halogen was Cl and no cocatalyst was present. However, the polymerization occurred smoothly in the presence of the cocatalyst Al(OPri)3. Mn grew linearly with the conversion, although the polydispersity index was relatively high (ca. 1.5). The apparent rate constant increased by a factor of ca. 10 on changing the initiator from MeCHClCO2Et to MeCHICO2Et. The initiator efficiency factor, f, was 0.37 when using the chloride initiator, the lowest value observed so far. In the case of the fully iodine-based system, the polymerization was pseudo-living both with and without Al(OPri)3. Thus, the ATRP of MA os accelerated by replacing Cl by iodine in the Mo catalyst (by a factor of ca. 5) and f is unity for this system. Finally, investigations of the stable free radical polymerization (SFRP) of styrene and MA revealed that irreversible radical trapping occurred. The low initiator efficiency factor in ATRP may be explained rather easily, and indeed must be expected, each time that the ATRP catalyst is also capable of trapping irreversibly the active radical.

Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) published new progress about 31253-08-4. 31253-08-4 belongs to iodides-buliding-blocks, auxiliary class Iodide,Ester, name is Ethyl 2-Iodopropionate, and the molecular formula is C5H9IO2, Name: Ethyl 2-Iodopropionate.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com