From Alkyl Halides to Ketones: Nickel‐Catalyzed Reductive Carbonylation Utilizing Ethyl Chloroformate as the Carbonyl Source
作者:Renyi Shi、Xile Hu
DOI:10.1002/anie.201903330
日期:2019.5.27
remains in high demand. Described here is a nickel‐catalyzed three‐component reductive carbonylation method for the synthesis of dialkyl ketones. A wide range of both symmetric and asymmetric dialkyl ketones can be accessed from alkyl halides and a safe CO source, ethyl chloroformate. The approach offers complementary substrate scope to existing carbonylation methods while avoiding the use of either toxic
nanoparticles efficiently catalyzed the C–S cross coupling of aryl and alkyl thiols with aryl halides in the absence of ligands on water under mild conditions. A wide range of diaryl sulfides and aryl alkyl sulfides are synthesized in good to excellent yields utilizing this protocol. This procedure is particularly noteworthy given its mild conditions, avoiding the undesired formation of disulfides through
A CuI promoted sulfenylation of organozinc reagents with arylsulfonyl chlorides/PPh3 has been explored. This reaction proceeded smoothly through an alkyl/aryl radical (generated from organometallics) under mild conditions and produced the desired sulfide products in excellent yields.
Direct conversion of carboxylic acids and carboxylic esters into S,S′-diphenyl acetals and phenyl sulfides with thexylphenylthioborane
作者:Sunggak Kim、Sung Soo Kim
DOI:10.1016/s0040-4039(00)96008-8
日期:1987.1
Reaction of carboxylic acids with thexylphenylthioborane in methylene chloride at room temperature gives S,S′-diphenyl acetals in high yields and carboxylic esters are converted into phenyl sulfides in the presence of zinc iodide under similar conditions.
Reactions of alkylmercurials with heteroatom-centered acceptor radicals
作者:Glen A. Russell、Preecha. Ngoviwatchai、Hasan I. Tashtoush、Anna. Pla-Dalmau、Rajive K. Khanna
DOI:10.1021/ja00219a030
日期:1988.5
En particulier, reactivite relative de chlorures d'alkylmercures vis-a-vis de PhS • , PhSe • et I • generes a partir du disulfure de phenyle, diseleniure de phenyle et du β-iodo styrene ou du (diphenyl-1,1 iodo-2) ethylene
En 特别,反应性相对于 de PhS • , PhSe • et I • 与 de PhS • , PhSe • et I • 属 a partir du disulfure de phenyle, diseleniure de phenyle et du β-iodo 苯乙烯 ou du (diphenyl-1,1 iodo -2) 乙烯