[EN] PREPARATION OF [ALPHA]-SULFENYLATED CARBONYL COMPOUNDS FROM PROPARGYLIC ALCOHOLS IN ONE STEP<br/>[FR] PRÉPARATION DE COMPOSÉS [ALPHA]-SULFÉNYLÉS CARBONYLE À PARTIR D'ALCOOLS PROPARGYLIQUES EN UNE SEULE ÉTAPE
申请人:KAT2BIZ AB
公开号:WO2013112104A1
公开(公告)日:2013-08-01
The present relates to a method and a kit to produce an optically pure α-sulfenylated carbonyl compound comprising a primary or a secondary propargylic alcohol and an aryl thiol, a transition metal catalyst and a solvent.
Rhenium-catalyzed Coupling of 2-Propynyl Alcohols and Several Nucleophiles via Dehydration
作者:Yoichiro Kuninobu、Hirokazu Ueda、Kazuhiko Takai
DOI:10.1246/cl.2008.878
日期:2008.8.5
Treatment of 2-propynyl alcohols with several nucleophiles in the presence of a catalytic amount of a rhenium complex, [ReBr(CO)3(thf)]2, gave coupling products via dehydration. In these reactions, C–C, C–O, and C–S bonds can be constructed under mild conditions.
(1e) has been disclosed to promote the catalytic propargylic substitution reaction of propargylicalcohols bearing not only terminal alkyne group but also internal alkyne group with thiols. It is noteworthy that neutral thiolate-bridged diruthenium complexes (1a-1c), which were known to promote the propargylic substitution reactions of propargylicalcohols bearing a terminal alkyne group with various heteroatom-
Gold-catalyzed nucleophilicsubstitution on propargylicalcohols, with various C-, O-, and S-nucleophiles, is described under very mild conditions (room temperature, dichloromethane) in 0-97% yield.