Generation of Iminyl Copper Species from α-Azido Carbonyl Compounds and Their Catalytic C−C Bond Cleavage under an Oxygen Atmosphere
摘要:
A copper-catalyzed reaction of a-azidocarbonyl compounds under an oxygen atmosphere is reported where nitriles are formed via C C bond cleavage of a transient Iminyl copper intermediate. The transformation is carried out by a sequence of denitrogenative formation of iminyl copper species from alpha-azidocarbonyl compounds and their C C bond cleavage, where molecular oxygen (1 atm) is a prerequisite to achieve the catalytic process and one of the oxygen atoms of O-2 was found to be incorporated Into the beta-carbon fragment as a carboxylic acid.
Reductive Deuteration of Nitriles Using D<sub>2</sub>O as a Deuterium Source
作者:Yuxuan Ding、Shihui Luo、Chaoqun Weng、Jie An
DOI:10.1021/acs.joc.9b02056
日期:2019.12.6
The first single electron transfer reductive deuteration of nitriles using D2O as a deuterium source has been developed for the synthesis of valuable α,α-dideuterio amines. A mild reductant (SmI2) was employed as the electron donor with Et3N as the additive. This reaction is amenable to both aromatic and aliphatic nitriles and features high deuterium incorporation, excellent regioselectivity, and good
Reduction of Selenoamides to Amines Using SmI<sub>2</sub>–H<sub>2</sub>O
作者:Samuel Thurow、Eder J. Lenardão、Xavier Just-Baringo、David J. Procter
DOI:10.1021/acs.orglett.6b03325
日期:2017.1.6
Selenoamides are selectively reduced to amines by SmI2 with H2O. The process is general for primary, secondary, and tertiary aryl and alkyl selenoamide substrates and selectively delivers amine products. The reduction proceeds under mild conditions using SmI2 activated by straightforward addition of H2O, and does not require an additional Lewis base additive.
Cyanation of 1-Halocycloalkenes Catalyzed by Tetracyanocobaltate(I). Convenient Synthesis of 1-Cyanocycloalkenes
作者:Takuzo Funabiki、Hirohito Kishi、Yoshihiro Sato、Satohiro Yoshida
DOI:10.1246/bcsj.56.649
日期:1983.2
1-Cyanocycloalkenes (1-cyanocyclopentene, -hexene, -heptene, and -octene) were readily synthesized by catalytic cyanation of the corresponding 1-halocycloalkenes with tetracyanocobaltate(I). Reactivities of methyl-substituted 1-chlorocyclohexenes were lower than that of 1-chlorocyclohexene, and 1-chloro-2-methylcyclohexene scarecely reacted. Hydrogenation and isomerization of 1-cyanocycloalkenes were