Efficient Method for Thioacetalization of Carbonyl Compounds in the Presence of a Catalytic Amount of Benzyltriphenylphosphonium Tribromide (BTPTB) under Solvent-Free Conditions
作者:Abdol Reza Hajipour、Seied A. Pourmousavi、Arnold E. Ruoho
DOI:10.1080/00397910802219197
日期:2008.7.24
Abstract A variety of carbonyl compounds have been successfully converted to the corresponding thioacetal derivatives in good to excellent yields on reaction of carbonyl compounds with 1,2-ethanedithiole, 1,3-propanedithiol, and ethylthiol in the presence of a catalytic amount of benzyltriphenylphosphonium tribromide (BTPTB) under solvent-free conditions. Some of the major advantages of this method
摘要 在催化量的三溴化苄基三苯基鏻存在下,羰基化合物与 1,2-乙二硫醇、1,3-丙二硫醇和乙硫醇反应,已成功地将多种羰基化合物转化为相应的硫代缩醛衍生物,产率非常高。 (BTPTB) 在无溶剂条件下。这种方法的一些主要优点是反应条件温和、效率高以及与其他报道的方法兼容。此外,在这些实验条件下,在双键或酮位的 α 处甚至芳环中都不会发生溴化。