Direct Conversion of <i>tert</i>-β-Bromo Alcohols to Ketones with Zinc Sulfide and DMSO
作者:B. K. Bettadaiah、K. N. Gurudutt、P. Srinivas
DOI:10.1021/jo020658q
日期:2003.3.1
tert-Beta-bromo alcohols, derived from simple monoterpene hydrocarbons, react with zinc sulfide in dimethyl sulfoxide to afford saturated ketones as the major and hydroxy ketones as the minor products. The reaction involves initial nucleophilic attack by DMSO on the carbon attached to the halogen, which is assisted by electrophilic zinc sulfide. Subsequent Kornblum type oxidation yields the alpha-hydroxy
衍生自简单单萜碳氢化合物的叔-β-溴代醇与硫化锌在二甲亚砜中反应,生成饱和酮作为主要产物,羟基酮作为次要产物。该反应涉及DMSO对与卤素连接的碳的初始亲核攻击,这由亲电子硫化锌辅助。随后的Kornblum型氧化产生α-羟基酮。另一方面,将质子β提取至羟基,然后相邻的羟基部分攻击二甲基s氧ox中间体的硫,随后其崩溃,生成烯醇,其互变异构为饱和酮。主要遵循后一种途径。