An Alkyne Hydrosilylation-Oxidation Strategy for the Selective Installation of Oxygen Functionality
作者:Barry M. Trost、Zachary T. Ball、Kai M. Laemmerhold
DOI:10.1021/ja051578h
日期:2005.7.1
Alkynes bearing propargylic, homopropargylic, and bishomopropargylic hydroxyl groups are shown to serve as precursors for ketone or alpha-hydroxy ketone functionality. The approach hinges on the intermediacy of vinylsilanes created through regioselective hydrosilylation catalyzed by the complex [Cp*Ru(MeCN)3]PF6. Several oxidative pathways of linear and cyclic vinylsilanes are studied, and the possibility
显示带有炔丙基、均炔丙基和双炔丙基羟基的炔可作为酮或α-羟基酮官能团的前体。该方法取决于通过复合物 [Cp*Ru(MeCN)3]PF6 催化的区域选择性氢化硅烷化产生的乙烯基硅烷的中间体。研究了线性和环状乙烯基硅烷的几种氧化途径,并证明了环状乙烯基硅烷非对映选择性环氧化的可能性。该序列构成立体选择性醛醇、高-羟醛和双-羟醛型过程的等价物。该方法应用于哌啶生物碱spectaline的短程合成。