Synthetic methods. 15. Unsaturated acyl derivatives of silicon, germanium, and tin from metalated enol ethers
作者:John A. Soderquist、Alfred Hassner
DOI:10.1021/ja00525a019
日期:1980.2
Synthetic methods
作者:Alfred Hassner、John A. Soderquist
DOI:10.1016/s0022-328x(00)91369-x
日期:1977.5
The first example of monohydroboration of silylacetylenes with dichloroborane is described. The reaction occurs regio- and stereo-specifically and leads after methanolysis to isolable vinylboronic esters (III). The latter undergo photo Z ⇌ E isomerization. Oxidation of III to the corresponding α-silaketone was accomplished in high yield using trimethylamine-N-oxide dihydrate. The overall method represents