Month: November 2022

Khattab, M. A. published the artcileIntramolecular charge migration and substituent effect in some benzoic hydrazide derivatives, Safety of 4-Iodobenzohydrazide, the publication is Egyptian Journal of Chemistry (1982), 25(5), 427-34, database is CAplus.

UV data for I (R = p-O₂N, p-Cl, o-Cl, p-I, H, O-Me, o-NH₂, etc.) were determined in EtOH and cyclohexane solvents. A plot of band position vs. σ indicate a valid LFER. IR data are given.

Egyptian Journal of Chemistry 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, Safety of 4-Iodobenzohydrazide.

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

Li, Xiaoya published the artcileNonionic nontoxic antimicrobial polymers: indole-grafted poly(vinyl alcohol) with pendant alkyl or ether groups, Product Details of C6H13I, the publication is Polymer Chemistry (2022), 13(16), 2307-2319, database is CAplus.

A series of new nonionic antimicrobial polymers with a biodegradable polyvinyl alc. (PVA) backbone grafted with indole units and different hydrophobic alkyl or ether groups were synthesized by facile esterification. The chem. structures and thermal properties of the obtained polymers were characterized by GPC, NMR, FTIR, WAXD, TGA and DSC analyses. All these nonionic polymers showed a significant antibacterial effect similar to gentamicin against 9 food and human pathogenic bacteria according to the disk diffusion assay. The presence of alkyl or ether groups in most cases did not significantly affect the antibacterial effect compared to the polymer with unsubstituted indole units (with N-H moieties). The impacts of the OH conversion and mol. weight of the obtained polymers on their antimicrobial and anti-quorum sensing effects were also preliminarily investigated. Finally, the obtained indole-grafted PVAs were subjected to MTT assay using a mammalian cell line and hemolysis investigations, and the results showed excellent biocompatibility, particularly for those with ether substituents.

Polymer Chemistry published new progress about 638-45-9. 638-45-9 belongs to iodides-buliding-blocks, auxiliary class Iodide,Aliphatic hydrocarbon chain, name is 1-Iodohexane, and the molecular formula is C6H13I, Product Details of C6H13I.

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

Schaedel, Nicole published the artcileSynthesis of imidazole and histidine-derived cross-linkers as analogs of GOLD and Desmosine, Application of 1-Iodohexane, the publication is Synthesis (2021), 53(13), 2260-2268, database is CAplus.

Amino acid derivatives with a central cationic heterocyclic core (e.g., imidazolium) are biol. relevant cross-linkers of proteins and advanced glycation end (AGE) products. Here, imidazolium-containing cross-linkers were synthesized from imidazole or histidine by N-alkylation employing aspartate- and glutamate-derived mesylates as key step. Biol. investigations were carried out to probe the biocompatibility of these compounds

Synthesis published new progress about 638-45-9. 638-45-9 belongs to iodides-buliding-blocks, auxiliary class Iodide,Aliphatic hydrocarbon chain, name is 1-Iodohexane, and the molecular formula is C6H13I, Application of 1-Iodohexane.

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

Mateen, Fahad published the artcileLuminescent solar concentrator utilizing energy transfer paired aggregation-induced emissive fluorophores, Computed Properties of 638-45-9, the publication is International Journal of Energy Research (2021), 45(12), 17971-17981, database is CAplus.

Recently, semitransparent luminescent solar concentrators (LSCs) have attracted considerable attention because they offer an easy and cost-effective route to harvest incident light. Various fluorophores including semiconducting quantum dots and organic dyes have been prepared and utilized for LSC fabrication. However, the narrow light absorption range, reabsorption losses, and limited photostability of the fluorophores still hinder the widespread use of LSCs under outdoor and indoor light conditions. Here, we rationally designed an LSC utilizing aggregation-induced emissive fluorophores (AIEgens) and an energy transfer (ET) strategy. We employ diketopyrrolopyrrole with triphenylamine moiety as a highly stable AIEgen that functions as an emissive ET acceptor in LSC; for a donor, we use tetraphenylethene containing triphenylamine moiety that shows good aggregation-induced emission features and excellent spectral overlap with the acceptor to yield an efficient ET process. A thin-film LSC device with an optimized donor:acceptor ratio (1:0.5) was fabricated. Under AM 1.5G solar spectrum, an LSC coupled with three side reflectors and a backside diffuser exhibits 18% optical conversion efficiency and a concentration factor of 1.18. Under indoor white LED illumination, the values were 27% and 1.68%, resp. After exposed to intense UV radiations for 5 h, the LSCs preserved 98% fluorescence which suggests their superior long-term photostability. Our results suggest that the combination of AIEgens and ET holds the potential for enhancing the efficiency of the device and extended stability of the fluorophores, two of the major requirements to allow industrial production and large-scale use of outdoor/indoor light harvesting LSCs.

International Journal of Energy Research published new progress about 638-45-9. 638-45-9 belongs to iodides-buliding-blocks, auxiliary class Iodide,Aliphatic hydrocarbon chain, name is 1-Iodohexane, and the molecular formula is C6H13I, Computed Properties of 638-45-9.

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

Person, Willis B. published the artcileInfrared spectra of iodine monochloride charge-transfer complexes, Name: Pyridine Iodochloride complex, the publication is Journal of the American Chemical Society (1958), 2049-53, database is CAplus.

Changes in the infrared spectrum of the ICl stretching vibration as the compound forms complexes of increasing stability are reported. Difficulties arising from the chem. reactivity of ICl were encountered and, to a certain extent, eliminated. The spectrum of this band is very sensitive to the strength of interaction between ICl and the donor mol. with which it is complexed. The frequency decreases regularly from 375 cm.^-1 for the uncomplexed ICl in CCl₄ to 275 cm.^-1 for the strongest complex, pyridine-ICl (I). The intensity of the band increases regularly with increasing strength of the complex, and is 8 times as great for I as for the uncomplexed ICl. The half-intensity width also increases with the strength of the complex. An attempt is made to explain the results in terms of “charge-transfer” theory. The analogy between these exptl. results and the changes in the OH stretching frequency on H-bond formation is discussed.

Journal of the American Chemical Society published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Name: Pyridine Iodochloride complex.

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

Maier, Martin S. published the artcileOxidative Approach Enables Efficient Access to Cyclic Azobenzenes, Computed Properties of 101420-79-5, the publication is Journal of the American Chemical Society (2019), 141(43), 17295-17304, database is CAplus and MEDLINE.

Azobenzenes are versatile photoswitches that found widespread use in a variety of fields, ranging from photopharmacol. to the material sciences. In addition to regular azobenzenes, the cyclic diazocines have recently emerged. Although diazocines have fascinating conformational and photophys. properties, their use was limited by their synthetic accessibility. Herein, the authors present a general, high-yielding protocol that relies on the oxidative cyclization of dianilines. In combination with a modular substrate synthesis, it allows for rapid access to diversely functionalized diazocines on gram scales. The authors’ work systematically explores substituent effects on the photoisomerization and thermal relaxation of diazocines. It will enable their incorporation into a wide variety of functional mols., unlocking the full potential of these emerging photoswitches. The method can be applied to the synthesis of a new cyclic azobenzene with a nine-membered central ring and distinct properties.

Journal of the American Chemical Society published new progress about 101420-79-5. 101420-79-5 belongs to iodides-buliding-blocks, auxiliary class Nitrile,Nitro Compound,Iodide,Benzene,Benzene Compounds, name is 4-Iodo-3-nitrobenzonitrile, and the molecular formula is C7H3IN2O2, Computed Properties of 101420-79-5.

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

Sah, Peter P. T. published the artcilep-Iodobenzohydrazide as a reagent for the identification of aldehydes and ketones, Safety of 4-Iodobenzohydrazide, the publication is Recueil des Travaux Chimiques des Pays-Bas et de la Belgique (1940), 349-56, database is CAplus.

cf. C. A. 29, 466.2; 30, 2875.6. p-Iodobenzohydrazide is prepared as follows: 3 g. p-IC₆H₄CO₂Me and 4 cc. of N₂H₄.H₂O (40%) are boiled while 4 cc. of absolute alc. are added. After refluxing for 8 hrs. and cooling, the hydrazide seps. and may be recrystallized from 50% alc. Yield 2.7 g., m. 168-9° (corrected). The following compounds gave hydrazones with the indicated corrected m. p.: AcH 224°, EtCHO 196°, PrCHO 201°, iso-PrCHO 209-10°, BuCHO 152°, iso-BuCHO 218-19°, AmCHO 148-9°, iso-AmCHO 171-2°, heptaldehyde 190-1°, octaldehyde 155°, nonylaldehyde 135-6°, decylaldehyde 151-2°, acetone 214-15°, MeCOEt 164-5°, Me hexyl ketone 125-6°, BzH 237-8°, benzylideneacetone 229-30° (decomposition), 2-furaldehyde 235° (decomposition), acetophenone 212°, p-methylacetophenone 214°, p-ethylacetophenone 167-8°, AcCH₂CO₂Et 107-9°, levulinic acid 184-5°, Me levulinate 163-4°, Et levulinate 127-8°, benzylideneacetophenone 182°, salicylaldehyde 214-15°, p-hydroxybenzaldehyde 295-6° (decomposition), cyclohexanone 188-9°, camphor 153-4°, citral 99-100°, fenchone 168-9°. The m. ps. of the hydrazones differ sufficiently to make identification possible without the use of mixed m. ps. and for that reason this reagent is recommended as a substitute for 2,4-dinitrophenylhydrazine and semicarbazide. The yields of the hydrazones are so high that 300 mg. of the reagent are sufficient.

Recueil des Travaux Chimiques des Pays-Bas et de la Belgique 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, Safety of 4-Iodobenzohydrazide.

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

Batsanov, Andrei S. published the artcileStereoselective chloro-deboronation reactions induced by substituted pyridine-iodine chloride complexes, Category: iodides-buliding-blocks, the publication is European Journal of Organic Chemistry (2005), 1876-1883, database is CAplus.

A novel class of charge-transfer complexes based on iodine chloride and substituted pyridines, which possess a number of interesting and unique structural features, can be employed to bring about a stereocontrolled chloro-deboronation of vinyl boronates to generate the (Z)-alkenyl chlorides in good yields.

European Journal of Organic Chemistry published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Category: iodides-buliding-blocks.

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

Lee, Jin Young published the artcileRadical alkylation of bis(silyloxy)enamine derivatives of organic nitro compounds, Application of Ethyl 2-Iodopropionate, the publication is Angewandte Chemie, International Edition (2006), 45(37), 6182-6186, database is CAplus and MEDLINE.

Alkylation β to a nitro group by radical chem. is made possible by initial conversion of the organic nitro compound into a bis(silyloxy)enamine (TBSOTf = tert-butyldimethylsilyl trifluoromethanesulfonate). E.g., reaction of Me₂CHNO₂ with TBSOTf gave (TBSO)₂NCMe:CH₂. Irradiation of a solution of the latter, ICH₂SO₂Ph, and hexamethylditin gave oxime ether (E)-PhSO₂CH₂CH₂CMe:NOTBS in 71% yield. Hydrolysis of the latter gave ketone PhSO₂CH₂CH₂COMe in 91% yield. An advantage of the method is the simultaneous conversion of the nitro group into a synthetically useful oxime ether group.

Angewandte Chemie, International Edition 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, Application of Ethyl 2-Iodopropionate.

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

Wang, Hao published the artcileFacile synthesis of terminal iodine substituted protected amino acid, COA of Formula: C13H24INO4, the publication is Huaxue Shiji (2014), 36(7), 656-658, database is CAplus.

(S)-tert-Bu 2-tert-butoxycarbonylamino-4-iodobutyrate was synthesized from (S)-1-tert-butyl-2-(tert-butyloxycarbonylamino)-aspartic acid by a two-step reaction, reduction and iodination, in total yield of 55%. (R)-Me 2-tert-butyloxycarbonylamino-3-iodopropionate was synthesized from (S)-2-(tert-butyloxycarbonylamino)-serine by a two-step reaction, esterification and iodination, in total yield of 70%. The structures were confirmed by ¹HNMR and ¹³CNMR.

Huaxue Shiji published new progress about 161370-66-7. 161370-66-7 belongs to iodides-buliding-blocks, auxiliary class Chiral,Iodide,Amine,Aliphatic hydrocarbon chain,Ester,Amide, name is (S)-tert-Butyl 2-((tert-butoxycarbonyl)amino)-4-iodobutanoate, and the molecular formula is C17H18N2O6, COA of Formula: C13H24INO4.

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