1-Chloroalkyl p-tolyl sulfoxides as useful agents for homologation of carbonyl compounds: conversion of carbonyl compounds to .alpha.-hydroxy acids, esters, and amides and .alpha.,.alpha.'-dihydroxy ketones
摘要:
One-carbon homologation of carbonyl compounds to alpha-hydroxy acids, esters, and amides by the use of 1-chloroalkyl p-tolyl sulfoxide as a hydroxycarbonyl anion equivalent is reported. Oxidation of the vinyl chlorides, the intermediates of the above-mentioned method, with osmium tetraoxide gives alpha,alpha'-dihydroxy ketones which are found in biologically active natural products such as cortisone and adriamycin.
SATOH, TSUYOSHI;ONDA, KEN-ICHI;YAMAKAWA, KOJI, J. ORG. CHEM., 56,(1991) N3, C. 4129-4134
作者:SATOH, TSUYOSHI、ONDA, KEN-ICHI、YAMAKAWA, KOJI
DOI:——
日期:——
Rhodium-Catalyzed Regio- and Enantioselective Allylic Amination of Racemic 1,2-Disubstituted Allylic Phosphates
作者:Wen-Bin Xu、Minghe Sun、Mouhai Shu、Changkun Li
DOI:10.1021/jacs.1c04016
日期:2021.6.9
Alkynylphosphines are rarely used as ligands in asymmetric metal catalysis. We synthesized a series of chiral bis(oxazoline)alkynylphosphine ligands and used them in Rh-catalyzed highlyregio- and enantioselectiveallylicamination reactions of 1,2-disubstituted allylic phosphates. Chiral 1,2-disubstituted allylic amines were synthesized in up to 95% yield with >20:1 branched/linear (b/l) ratio and
1-Chloroalkyl p-tolyl sulfoxides as useful agents for homologation of carbonyl compounds: conversion of carbonyl compounds to .alpha.-hydroxy acids, esters, and amides and .alpha.,.alpha.'-dihydroxy ketones
作者:Tsuyoshi Satoh、Kenichi Onda、Koji Yamakawa
DOI:10.1021/jo00013a011
日期:1991.6
One-carbon homologation of carbonyl compounds to alpha-hydroxy acids, esters, and amides by the use of 1-chloroalkyl p-tolyl sulfoxide as a hydroxycarbonyl anion equivalent is reported. Oxidation of the vinyl chlorides, the intermediates of the above-mentioned method, with osmium tetraoxide gives alpha,alpha'-dihydroxy ketones which are found in biologically active natural products such as cortisone and adriamycin.