A silver/DBU catalyst system was developed for the effective synthesis of cyclic carbonate and oxazolidinone from the reaction of CO2 with propargylicalcohols and propargylic amines, respectively,...
开发了一种银/DBU 催化剂体系,用于通过 CO2 分别与炔丙醇和炔丙胺反应有效合成环状碳酸酯和恶唑烷酮,...
Silver-Catalyzed Incorporation of Carbon Dioxide into Propargylic Alcohols
作者:Wataru Yamada、Yudai Sugawara、Hau Man Cheng、Taketo Ikeno、Tohru Yamada
DOI:10.1002/ejoc.200700169
日期:2007.6
The combined use of a catalytic amount of silver acetate and a stoichiometric amount of DBU efficiently catalyzed the incorporation of CO2 under mild reaction conditions into a wide range of propargylicalcohols bearing a terminal or an internal triple bond to afford the corresponding cyclic carbonates in high-to-excellent yields. All the cyclic carbonates obtained from the reaction were found to be
Conjugated 1-bromo or 1-iodo-1,3-dienes bearing a sulfide substituent have been synthesized via 1,2-sulfur migration from propargylic thioethers upon activation with NIS or NBS. The reaction generally proceeds with high control over the regio- and diastereoselectivity. Highly substituted thiophenes and selenophenes are easily obtained from the generated dienes.