Chiral organometallic reagents. Part 27. The stereochemistry of the carbomagnesiation of a vinylsilane
作者:Reinhard W. Hoffmann、Oliver Knopff、Thorsten Faber
DOI:10.1039/b103801j
日期:——
The intramolecular carbomagnesiation of a vinylsilane at 25 °C in THF has been found to proceed in a stereospecific (>95%) syn-addition of carbon and magnesium to the double bond. The resulting α-silylalkylmagnesium compounds are not configurationally stable under the reaction conditions. They epimerize with a half-life of 2.7 d at room temperature.
在 25 °C、四氢呋喃中对乙烯基硅烷进行分子内碳镁化时,发现碳和镁以立体特异性(>95%)的方式加成到双键上。在反应条件下,生成的 α-硅烷基镁化合物在构型上并不稳定。它们在室温下的外延半衰期为 2.7 d。