Month: November 2022

Lu, Xi published the artcileNickel-Catalyzed Defluorinative Reductive Cross-Coupling of gem-Difluoroalkenes with Unactivated Secondary and Tertiary Alkyl Halides, Name: Benzyl 3-iodoazetidine-1-carboxylate, the main research area is arylfluoroalkene chemoselective diastereoselective preparation; nickel imidazolinylpyridine catalyst defluorinative reductive coupling aryldifluoroalkene bromoalkane iodoalkane; secondary tertiary bromoalkane chloroalkane reductive coupling aryldifluoroalkene nickel catalyst.

In the presence of Ni(cod)2 and an imidazolinylpyridine ligand, 1,1-difluoroalkenes such as I underwent chemoselective and diastereoselective reductive defluorinative coupling reactions with secondary alkyl bromides and iodides such as iodocyclohexane mediated by bis(pinacolato)diboron and tripotassium phosphate to yield (Z)-arylfluoroalkenes such as II in 36-95% yields and in 8:1->50:1 Z:E diastereoselectivities; the reaction was also used to couple difluoroalkenes with primary alkyl iodides and 1,1-difluoroalkyl bromides using a catalyst generated from NiBr2(diglyme) and 4,7-dimethoxy-1,10-phenanthroline.

Journal of the American Chemical Society published new progress about Bromoalkanes Role: RCT (Reactant), RACT (Reactant or Reagent). 939759-26-9 belongs to class iodides-buliding-blocks, name is Benzyl 3-iodoazetidine-1-carboxylate, and the molecular formula is C11H12INO2, Name: Benzyl 3-iodoazetidine-1-carboxylate.

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

Reddy, K. Suresh Kumar published the artcileIodination of aromatic compounds using potassium iodide and hydrogen peroxide, Recommanded Product: 4-Iodo-2-nitrophenol, the main research area is arene regioselective iodination potassium iodide hydrogen peroxide; aryl iodide green preparation.

A simple, efficient, regioselective, and eco-friendly method for oxy-iodination of aromatic compounds is presented. In this method, the electrophilic substitutions of iodine generated in situ from KI as an iodine source and H2O2 as an O source were employed without any catalyst/mineral acid.

Synthetic Communications published new progress about Aryl iodides Role: SPN (Synthetic Preparation), PREP (Preparation). 21784-73-6 belongs to class iodides-buliding-blocks, name is 4-Iodo-2-nitrophenol, and the molecular formula is C6H4INO3, Recommanded Product: 4-Iodo-2-nitrophenol.

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

Li, Yibiao published the artcile2-Acetylthienopyridine Synthesis via Thiolation and Copper-Catalyzed Cyclization of o-Propynol Fluoropyridine Using Xanthate as a Thiol Surrogate, SDS of cas: 153034-78-7, the main research area is fluoropyridinylalkynol xanthate thiolation cyclization oxidation copper; thienopyridine preparation; copper thiolation cyclization oxidation catalyst.

2-Acylthienopyridines and related heterocycles are readily prepared in moderate to good yields under mild conditions by a nucleophilic thiolation, copper-catalyzed cyclization, and an oxidation cascade process using potassium xanthate as the thiol source. Moreover, excellent chemoselectivity, broad substrate scope, and good functional group tolerance are prominent features of this transformation.

Journal of Organic Chemistry published new progress about Cyclization. 153034-78-7 belongs to class iodides-buliding-blocks, name is 2-Fluoro-3-iodo-5-methylpyridine, and the molecular formula is C6H5FIN, SDS of cas: 153034-78-7.

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

Watson, Rebecca B. published the artcileIron(III) Chloride Catalyzed Formation of 3,4-Dihydro-2H-pyrans from α-Alkylated 1,3-Dicarbonyls. Selective Synthesis of α- and β-Lapachone, Safety of Ethyl 3-(4-iodophenyl)-3-oxopropanoate, the main research area is dihydropyran preparation iron chloride catalyzed cyclization; lapachone synthesis iron chloride catalyzed cyclization.

A mild, catalytic method for the synthesis of 3,4-dihydro-2H-pyrans is described. The FeCl3-catalyzed transformation of aryl- and alkyl β-diketones enables synthetic access to functionalized pyran core structures incorporated in many natural products and biol. active target structures. The method represents a mild alternative to currently available reaction protocols relying on stoichiometric reagents and harsh reaction conditions. This FeCl3-catalyzed transformation has enabled the selective synthesis of α-lapachone in two synthetic transformations and subsequently β-lapachone in three synthetic transformations, which is currently undergoing clin. trials as a potent anticancer agent.

Organic Letters published new progress about Cyclization. 63131-30-6 belongs to class iodides-buliding-blocks, name is Ethyl 3-(4-iodophenyl)-3-oxopropanoate, and the molecular formula is C11H11IO3, Safety of Ethyl 3-(4-iodophenyl)-3-oxopropanoate.

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

Tejo, Ciputra published the artcileBronsted acid catalyzed amination of 1,3-dicarbonyl compounds by iminoiodanes, Related Products of iodides-buliding-blocks, the main research area is Bronsted acid catalyst amination dicarbonyl compound iminoiodane.

A synthetic method to aminate 1,3-dicarbonyl compounds with PhI:NTs using Bronsted acid catalysis is described herein. The method was shown to be applicable to β-keto esters and phosphonates as well as 1,3-diones, providing the corresponding α,α-acyl amino acid derivatives in moderate to excellent yields. E.g., amination of PhCOCH2CO2Et with PhI:NTs in the presence of 10 mol% of TFA and 4 Å MS in dichloromethane at 0 °C for 90 min gave 85% aminated product I.

Synlett published new progress about Amination. 63131-30-6 belongs to class iodides-buliding-blocks, name is Ethyl 3-(4-iodophenyl)-3-oxopropanoate, and the molecular formula is C11H11IO3, Related Products of iodides-buliding-blocks.

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

Shimizu, Kazuki published the artcileBoron-containing phenoxyacetanilide derivatives as hypoxia-inducible factor (HIF)-1α inhibitors, Application of 4-Iodo-2-nitrophenol, the main research area is boron containing phenoxyacetanilide derivative preparation hypoxia inducible factor inhibition; carboranylphenoxyacetanilide boronic acid derivative preparation HIF VEGF inhibition; aryloxyacetanilide pinacolboronate hypoxia induced HIF transcriptional activity inhibitor HeLa.

A series of boron-containing phenoxyacetanilide derivatives I [R1 = BPin, B(OH)2; R2 = Me, Et, Ph, Cy, 1-adamantyl, t-Bu, o-carboranyl] were synthesized as hypoxia-inducible factor (HIF)-1α inhibitors. Among the compounds synthesized, carboranylphenoxyacetanilide I [R1 = B(OH)2; R2 = o-carboranyl (II)] was found to be a potent inhibitor against HIF-1α accumulation under hypoxic conditions and inhibited the hypoxia-induced HIF-1 transcriptional activity in HeLa cells (IC50 = 0.74 μM). Compound II (GN26361) suppressed hypoxia-induced HIF-1α accumulation and vascular endothelial growth factor mRNA expression in a concentration-dependent manner without affecting the expression of HIF-1α mRNA.

Bioorganic & Medicinal Chemistry Letters published new progress about Boronic acids, esters Role: PAC (Pharmacological Activity), RCT (Reactant), SPN (Synthetic Preparation), BIOL (Biological Study), RACT (Reactant or Reagent), PREP (Preparation). 21784-73-6 belongs to class iodides-buliding-blocks, name is 4-Iodo-2-nitrophenol, and the molecular formula is C6H4INO3, Application of 4-Iodo-2-nitrophenol.

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

Wang, Heng-Yen published the artcileRegioselective synthesis of 2,3,4- or 2,3,5-trisubstituted pyrroles via [3,3] or [1,3] rearrangements of O-vinyl oximes, Application In Synthesis of 63131-30-6, the main research area is pyrrole derivative regioselective synthesis; vinyl oxime isomerization sigmatropic rearrangement Ir catalyst.

The regioselective synthesis of 2,3,4- or 2,3,5-trisubstituted pyrroles e. g., I has been achieved via [3,3] and [1,3] sigmatropic rearrangements of O-vinyl oximes, resp. Iridium-catalyzed isomerization of easily prepared O-allyl oximes enables rapid access to O-vinyl oximes. Optimization and scope of the O-allyl oxime isomerization and subsequent pyrrole formation are discussed and mechanistic pathways are proposed. The regioselectivity of pyrrole formation can be controlled by either the identity of the α-substituent or through the addition of an amine base. When enolization is favored, a [3,3] rearrangement followed by a Paal-Knorr cyclization provides a 2,3,4-trisubstituted pyrrole; when enolization is disfavored, a [1,3] rearrangement occurs prior to enolization to produce a 2,3,5-trisubstituted pyrrole after cyclization. Conditions are provided for selecting either the [3,3] rearrangement or the [1,3] rearrangement product with β-ester O-allyl oxime substrates.

Journal of Organic Chemistry published new progress about Isomerization. 63131-30-6 belongs to class iodides-buliding-blocks, name is Ethyl 3-(4-iodophenyl)-3-oxopropanoate, and the molecular formula is C11H11IO3, Application In Synthesis of 63131-30-6.

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

Yi, Jun published the artcileNickel-catalyzed Sonogashira reactions of non-activated secondary alkyl bromides and iodides, HPLC of Formula: 939759-26-9, the main research area is internal alkyne preparation; terminal alkyne alkyl halide Sonogashira coupling nickel catalyst; alkynes; cross-coupling; halides; nickel; synthetic methods.

A nickel-catalyzed Sonogashira cross-coupling of terminal alkynes with non-activated secondary alkyl iodides and bromides is described. This reaction provides a useful approach to the synthesis of substituted alkynes (in particular, dialkylated asym. alkynes) from readily available substrates. The bis(oxazoline) family of ligands was found to be effective for mediating nickel-catalyzed C(sp)-C(sp3) cross-couplings of both secondary and primary alkyl halides under fairly mild reaction conditions (room temperature to -20°C). This reaction exhibited good compatibility with a variety of synthetically important functional groups and therefore, could be used for the synthesis and modifications of biol. relevant mols. Furthermore, high diastereoselectivities were observed in C(sp)-C(sp3) cross-couplings of terminal alkynes with 1,3- and 1,4-substituted cyclohexyl iodides.

Angewandte Chemie, International Edition published new progress about Alkynes, α- Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 939759-26-9 belongs to class iodides-buliding-blocks, name is Benzyl 3-iodoazetidine-1-carboxylate, and the molecular formula is C11H12INO2, HPLC of Formula: 939759-26-9.

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

Weis, Jonathan G. published the artcileEmploying Halogen Bonding Interactions in Chemiresistive Gas Sensors, Category: iodides-buliding-blocks, the main research area is halogen bonding interaction chemiresistive gas sensor pyridine picoline detection.

This paper reports the use of halogen bonding interactions for gas-phase detection of pyridine in SWCNT-based chemiresistive sensors with sub-ppm theor. detection limits. The chemiresistors were prepared by solvent-free ball-milling of single-walled carbon nanotubes (SWCNTs) and aryl halide-based selectors, compression into a pellet, and subsequent mech. abrasion between gold electrodes on paper. The sensing responses reflect halogen bonding trends, with few exceptions. The predominant signal transduction mechanism is likely attributed to swelling of the insulating haloarene matrix.

ACS Sensors published new progress about Carbon nanotubes. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, Category: iodides-buliding-blocks.

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

Knipe, Peter C. published the artcileA Lewis acid-mediated conformational switch, Quality Control of 105752-04-3, the main research area is pyridine alkyne ethyne benzoate preparation mol switch.

Mols. that change conformation in response to a stimulus have numerous uses, such as artificial chemoreceptors, novel drug delivery strategies and liquid crystal technol. Here the authors describe the design, synthesis and conformational behavior of an isonicotinamide-substituted diphenylacetylene upon recognition of Lewis acids, including metalloporphyrins. Binding of these at a remote site (i.e., pyridine nitrogen) increases hydrogen-bond donor ability of the proximal amide NH, causing an increased preference for the alkyne rotamer in which this hydrogen bond is maintained. The synthesis of the target compound was achieved by a reaction of 2-[2-[2-amino-6-(benzoylamino)phenyl]ethynyl]benzoic acid Me ester with 4-pyridinecarbonyl chloride. The title compound thus formed was a bis[amide] compound [[[[(pyridinyl)carbonyl]amino][(benzoyl)amino]phenyl]ethynyl]benzoic acid ester. The alkyne link permits a rapid interchange between conformers and the preferred conformation is determined by the hydrogen-donor properties of the amide bonds. Conformational changes were induced by various Lewis acids, such as [5,10,15,20-tetrakis[3,5-bis(1,1-dimethylethyl)phenyl]-21H,23H-porphinato(2-)-κN21,κN22,κN23,κN24]zinc (metalloporphyrin), trifluoroacetic acid, trifluoro[1,1′-oxybis[ethane]]boron (boron trifluoride etherate).

Organic & Biomolecular Chemistry published new progress about Chemoreceptors Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), SPN (Synthetic Preparation), PROC (Process), PREP (Preparation). 105752-04-3 belongs to class iodides-buliding-blocks, name is 4-Iodo-3-nitroaniline, and the molecular formula is C6H5IN2O2, Quality Control of 105752-04-3.

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