Month: October 2022

《The Influence of Different Spacer Lengths on the Selectivity of Self-Assembly Processes of Bis(bipyridine)-BINOL Helicates》 was written by Bunzen, Jens; Hapke, Marko; Luetzen, Arne. SDS of cas: 189518-78-3 And the article was included in European Journal of Organic Chemistry on August 31 ,2009. The article conveys some information:

The synthesis and self-assembly behavior of enantiomerically pure bis(chelating) ligands is reported. The ligands differ in the spacer unit between a BINOL core and two bipyridyl groups as the chelating entities and undergo completely diastereoselective self-assembly to dinuclear double-stranded helicates with silver(I) salts, as demonstrated by NMR and CD spectroscopy and ESI mass spectrometry. Upon coordination to iron(II) or zinc(II) ions, however, a dramatic loss in the diastereoselectivity of the self-assembly of dinuclear triple-stranded helicates was observed as a result of increasing spacer length. In the case of zinc(II), the self-assembly processes were even found to be nonselective with regard to the composition of the helicates.(© Wiley-VCH Verlag GmbH and Co. KGaA, 69451 Weinheim, Germany, 2009).(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3SDS of cas: 189518-78-3) was used in this study.

(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3) belongs to organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. SDS of cas: 189518-78-3 Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond.

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

The author of 《Rhodium-Catalyzed Reaction of Silacyclobutanes with Unactivated Alkynes to Afford Silacyclohexenes》 were Chen, Hua; Chen, Yi; Tang, Xiaoxiao; Liu, Shunfa; Wang, Runping; Hu, Tianbao; Gao, Lu; Song, Zhenlei. And the article was published in Angewandte Chemie, International Edition in 2019. Synthetic Route of C24H20I2O4 The author mentioned the following in the article:

A Rh-catalyzed reaction of silacyclobutanes (SCBs) with unactivated alkynes has been developed to form silacyclohexenes with high chemoselectivity. Good enantioselectivity at the stereogenic silicon center was achieved using a chiral phosphoramidite ligand. The resulting silacyclohexenes are useful scaffolds for synthesizing structurally attractive silacyclic compounds The experimental part of the paper was very detailed, including the reaction process of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3Synthetic Route of C24H20I2O4)

(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3) belongs to organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond.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.Synthetic Route of C24H20I2O4

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

In 2015,Mahamulkar, Shraddha G.; Cisarova, Ivana; Jahn, Ullrich published 《The Lithiation Reactivity and Selectivity of Differentially Branched Alkyldiphenylphosphine Oxides – A Simple and Versatile Approach to ortho-Functionalized Arylphosphine Oxides》.Advanced Synthesis & Catalysis published the findings.Synthetic Route of C2H4I2 The information in the text is summarized as follows:

Alkyldiphenylphosphine oxides typically undergo α-deprotonation with alkyllithium reagents. Here, the lithiation of differentially branched alkyldiphenylphosphine oxides was investigated and a diverse, but predictable reactivity was found. γ-Branched derivatives undergo selective directed ortho-metalation (DoM) using butyllithium and TMEDA as an additive. With decreasing degree of γ-branching α-lithiation becomes predominant. The ortho-phosphinoyllithium intermediates are subject to functionalization and C-C bond forming reactions, thus providing a convenient approach to new phosphine oxides and phosphine-borane complexes, which have a good potential for an approach to new ligands for catalysis. The results came from multiple reactions, including the reaction of 1,2-Diiodoethane(cas: 624-73-7Synthetic Route of C2H4I2)

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond. 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.Synthetic Route of C2H4I2

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

In 2018,Zhou, Fang; Zhu, Jin; Zhang, Yao; Zhu, Shaolin published 《NiH-Catalyzed Reductive Relay Hydroalkylation: A Strategy for the Remote C(sp3)-H Alkylation of Alkenes》.Angewandte Chemie, International Edition published the findings.Application In Synthesis of tert-Butyl 4-iodopiperidine-1-carboxylate The information in the text is summarized as follows:

The terminal-selective, remote C(sp3)-H alkylation of alkenes was achieved by a relay process combining NiH-catalyzed hydrometalation, chain walking, and alkylation. This method enables the construction of unfunctionalized C(sp3)-C(sp3) bonds under mild conditions from two simple feedstock chems., namely olefins and alkyl halides. The practical value of this transformation is further demonstrated by the large-scale and regioconvergent alkylation of isomeric mixtures of olefins at low catalyst loadings. In addition to this study using tert-Butyl 4-iodopiperidine-1-carboxylate, there are many other studies that have used tert-Butyl 4-iodopiperidine-1-carboxylate(cas: 301673-14-3Application In Synthesis of tert-Butyl 4-iodopiperidine-1-carboxylate) was used in this study.

tert-Butyl 4-iodopiperidine-1-carboxylate(cas: 301673-14-3) is one of organic iodides. Organic iodides are used in veterinary products (Organic Iodide Powder) as a nutritional source of iodine. 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. Oceanic alkyl iodides are believed to be the principal source of atmospheric iodine.Application In Synthesis of tert-Butyl 4-iodopiperidine-1-carboxylate

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

In 2019,Journal of the Iranian Chemical Society included an article by Gaikwad, D. S.; Undale, K. A.; Patil, D. B.; Pore, D. M.. Safety of 1-Iodo-4-methylbenzene. The article was titled 《Multi-functionalized ionic liquid with in situ-generated palladium nanoparticles for Suzuki, Heck coupling reaction: a comparison with deep eutectic solvents》. The information in the text is summarized as follows:

A new catalytic system for Suzuki and Heck coupling for the synthesis of biaryls and olefins I [R = H, 4-OMe, 4-C(O)Me, etc.; R1 = Ph, CO2Me, CN, etc.] was developed from multi-functionalized task specific ionic liquid and in situ formed palladium nanoparticles(PdNPs). These PdNPs were found size below 10 nm and exhibited a excellent catalytic activity in the cross-coupling of aryl halide without using external phosphine ligand. Along with electron deficient olefins, electron rich olefins were also undergo smooth reaction giving excellent yield. The results obtained in ionic liquid were compared with results obtained in deep eutectic solvents. Progress of reaction was found very smooth in ionic liquid rather than in deep eutectic solvents. The aqueous system containing ionic liquid along with PdNPs was recycled for seven times, without any significant loss.1-Iodo-4-methylbenzene(cas: 624-31-7Safety of 1-Iodo-4-methylbenzene) was used in this study.

1-Iodo-4-methylbenzene(cas: 624-31-7) undergoes Suzuki-Miyaura coupling reaction with phenylboronic acid catalyzed by (Ni,Mg)3Si2O5(OH)4 solid-solution nanotubes loaded with palladium.Safety of 1-Iodo-4-methylbenzene

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

In 2019,Applied Organometallic Chemistry included an article by Campisciano, Vincenzo; Calabrese, Carla; Liotta, Leonarda Francesca; La Parola, Valeria; Spinella, Alberto; Aprile, Carmela; Gruttadauria, Michelangelo; Giacalone, Francesco. Related Products of 591-18-4. The article was titled 《Templating effect of carbon nanoforms on highly cross-linked imidazolium network: Catalytic activity of the resulting hybrids with Pd nanoparticles》. The information in the text is summarized as follows:

Two different carbon nanoforms (CNFs), namely multi-walled carbon nanotubes (MWCNTs) and carbon nanohorns (CNHs), were chosen as support for the direct polymerization of a bis-vinylimidazolium salt. Transmission electron microscopy analyses revealed a templating effect of the CNFs on the growth of the polymeric network, which perfectly covers their whole surfaces creating a cylindrical or spherical coating for MWCNTs and CNHs, resp. Subsequently, the CNFs-polyimidazolium was used as stabilizers for Pd nanoparticles (Pd NPs), and the obtained materials were characterized by means of anal. and spectroscopic techniques and then employed as easily recoverable and recyclable catalysts for Suzuki and Heck reactions. Quant. conversions was obtained in almost all the explored reactions, even employing low loading of catalyst (down to 0.007 mol%). Suzuki reactions were carried out in pure water under aerobic conditions. Both materials showed excellent activity and recyclability for the investigated C-C coupling reactions, with the CNHs-based material resulting slightly more active than the MWCNTs-based one due to a higher superficial exposure of Pd NPs.1-Bromo-3-iodobenzene(cas: 591-18-4Related Products of 591-18-4) was used in this study.

1-Bromo-3-iodobenzene(cas: 591-18-4) has been used in the preparation of 1-(3′-bromophenyl)-3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodec-1-ene and 1-(3′-bromophenyl)-3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooct-1-ene.Related Products of 591-18-4 Further, it is involved in the preparation of oxygen-tethered 1,6-enynes.

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

In 2019,Bioorganic & Medicinal Chemistry Letters included an article by Beck, Kasper; Reslow-Jacobsen, Charlotte; Hornum, Mick; Henriksen, Christian; Nielsen, Poul. Application of 1774-47-6. The article was titled 《A double-headed nucleotide with two cytosines: DNA with condensed information and improved duplex stability》. The information in the text is summarized as follows:

Double-headed nucleotide monomers are capable of condensing the genetic information of DNA. Herein, a double-headed nucleotide with two cytosine bases (CC) is constructed. The addnl. cytosine is connected through a methylene linker to the 2′-position of arabinocytidine. The nucleotide is incorporated into oligonucleotides and its effect on duplex stability is studied. For single incorporations, a thermal stabilization of 4.0 °C is found as compared to the unmodified duplex and it is shown that both nucleobases of CC participate in Watson-Crick base pairing. In combination with the previously published UT monomer, it is also shown that multiple incorporations are tolerated. For instance, a 16-mer sequence is targeted by a 13-mer oligonucleotide by using one CC and two UT monomers without compromising the overall duplex stability. Finally, the potential of double-headed nucleotides in triplex-forming oligonucleotides is studied, however, with the conclusion that the present design is not well-suited for this function.Trimethylsulfoxonium iodide(cas: 1774-47-6Application of 1774-47-6) was used in this study.

Trimethylsulfoxonium iodide(cas: 1774-47-6) reacts with sodium hydride to prepare dimethyloxosulfonium methylide, which is used as a methylene-transfer reagent in synthetic chemistry. It is used to prepare ylide, which reacts with carbonyl compounds to get epoxides.Application of 1774-47-6

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

The author of 《Palladium Catalyzed Regioselective C4-Arylation and Olefination of Indoles and Azaindoles》 were Thrimurtulu, Neetipalli; Dey, Arnab; Singh, Anurag; Pal, Kuntal; Maiti, Debabrata; Volla, Chandra M. R.. And the article was published in Advanced Synthesis & Catalysis in 2019. Formula: C7H7I The author mentioned the following in the article:

A convergent strategy for the synthesis of biol. relevant C4-substituted indole scaffolds was demonstrated using Pd(II)-catalyzed remote C-H functionalization of indoles and azaindoles. The reaction displayed high regioselectivity for the C4-position of indole-3-carbaldehydes using glycine as an inexpensive transient directing group. Notable features of this transformation included the selective formation of six-membered palladacyle and excellent functional group tolerance. The experimental part of the paper was very detailed, including the reaction process of 1-Iodo-4-methylbenzene(cas: 624-31-7Formula: C7H7I)

1-Iodo-4-methylbenzene(cas: 624-31-7) undergoes Suzuki-Miyaura coupling reaction with phenylboronic acid catalyzed by (Ni,Mg)3Si2O5(OH)4 solid-solution nanotubes loaded with palladium.Formula: C7H7I

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

The author of 《Ligand-Enabled PdII-Catalyzed Iterative γ-C(sp3)-H Arylation of Free Aliphatic Acid》 were Dolui, Pravas; Das, Jayabrata; Chandrashekar, Hediyala B.; Anjana, S. S.; Maiti, Debabrata. And the article was published in Angewandte Chemie, International Edition in 2019. Recommanded Product: 1-Iodo-4-methylbenzene The author mentioned the following in the article:

C-H functionalization of aliphatic carboxylic acids without attaching exogenous auxiliary has been so far limited at the proximal β-position. In this work, we demonstrate a ligand enabled palladium catalyzed first regioselective distal γ-C(sp3)-H functionalization of aliphatic carboxylic acids without incorporating an exogenous directing group. Aryl iodides containing versatile functional groups including complex organic mols. are well tolerated with good to excellent yields during the γ-C(sp3)-H arylation reaction. Interestingly, weak coordination of carboxylate group can be further extended for sequential hetero di-arylation. Application of the protocol has been showcased by synthesizing substituted α-tetralone. Mechanistic investigations have been carried out to shed light on the reaction pathway. In the part of experimental materials, we found many familiar compounds, such as 1-Iodo-4-methylbenzene(cas: 624-31-7Recommanded Product: 1-Iodo-4-methylbenzene)

1-Iodo-4-methylbenzene(cas: 624-31-7) is used in wide range of medicals industrial applications as well as in pharmaceutical intermediates, polarizing films for Liquid Crystal Display (LCD) chemicals.Recommanded Product: 1-Iodo-4-methylbenzene

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

The author of 《Iridium-Catalyzed Silylation of C-H Bonds in Unactivated Arenes: A Sterically Encumbered Phenanthroline Ligand Accelerates Catalysis》 were Karmel, Caleb; Chen, Zhewei; Hartwig, John F.. And the article was published in Journal of the American Chemical Society in 2019. Quality Control of 1-Chloro-3-iodobenzene The author mentioned the following in the article:

We report a new system for the silylation of aryl C-H bonds. The combination of [Ir(cod)(OMe)]2 and 2,9-Me2-phenanthroline (2,9-Me2-phen) catalyzes the silylation of arenes at lower temperatures and with faster rates than those reported previously, when the hydrogen byproduct is removed, and with high functional group tolerance and regioselectivity. Inhibition of reactions by the H2 byproduct is shown to limit the silylation of aryl C-H bonds in the presence of the most active catalysts, thereby masking their high activity. Anal. of initial rates uncovered the high reactivity of the catalyst containing the sterically hindered 2,9-Me2-phen ligand but accompanying rapid inhibition by hydrogen. With this catalyst, under a flow of nitrogen to remove hydrogen, electron-rich arenes, including those containing sensitive functional groups, undergo silylation in high yield for the first time, and arenes that underwent silylation with prior catalysts react over much shorter times with lower catalyst loadings. The synthetic value of this methodol. is demonstrated by the preparation of key intermediates in the synthesis of medicinally important compounds in concise sequences comprising silylation and functionalization. Mechanistic studies demonstrate that the cleavage of the aryl C-H bond is reversible and that the higher rates observed with the 2,9-Me2-phen ligand are due to a more thermodynamically favorable oxidative addition of aryl C-H bonds. In the experimental materials used by the author, we found 1-Chloro-3-iodobenzene(cas: 625-99-0Quality Control of 1-Chloro-3-iodobenzene)

1-Chloro-3-iodobenzene(cas: 625-99-0) belongs to organic iodides. Generally organic iodides can be divided into two classes of alkyl iodides and aryl iodides. Quality Control of 1-Chloro-3-iodobenzene Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics.

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