Iodine Promoted Regioselective α-Sulfenylation of Carbonyl Compounds using Dimethyl Sulfoxide as an Oxidant
作者:Yogesh Siddaraju、Kandikere Ramaiah Prabhu
DOI:10.1021/acs.orglett.6b03084
日期:2016.12.2
A metal-free regioselective sulfenylation of the α-CH3 group of ketones has been achieved in the presence of the α-CH2 or α-CH group using the cross dehydrogenative (CDC) strategy. Aldehydes also exhibit good selectivity forming the corresponding α-sulfenylated products. This efficient sulfenylation of ketones or aldehydes with thiones or heterocyclic thiols utilizes dimethyl sulfoxide (DMSO) as an
Synthesis of 2,4-Disubstituted Thiazoles from (<i>Z</i>)-(2-Acetoxyvinyl)phenyl-λ<sup>3</sup>-iodanes: Nucleophilic Substitution of α-λ<sup>3</sup>-Iodanyl Ketones with Thioureas and Thioamides
l-lambda(3)-iodanes react with thioureas or thioamides in MeOH to give 2,4-disubstituted thiazoles directly in good yields. The reaction probably involves generation of highly reactive alpha-lambda(3)-iodanyl ketones through ester exchange of the beta-acetoxy group with liberation of methyl acetate, followed by nucleophilic substitutions with thioureas or thioamides.