Palladium‐Catalyzed Three‐Component Reaction of Dihydrosilanes and Vinyl Iodides in the Presence of Alcohols: Rapid Assembly of Silyl Ethers of Tertiary Silanes
A one‐pot reaction that directly converts dihydrosilanes into silyl ethers of tertiary silanes is reported. Under palladium catalysis, one Si−H bond of the dihydrosilane formally engages in C(sp3)−Si bond formation with a vinyl iodide while the other Si−H bond is transformed into a silyl iodide that undergoes facile alcoholysis with an alcohol. The C−C double bond is reduced in that process. This three‐component
Photochemical reactions of [5,6: 7,8]dibenzo-2-silabicyclo[2.2.2]octanes
作者:Bok Ryul Yoo、Myong Euy Lee、Il Nam Jung
DOI:10.1016/0022-328x(91)83022-v
日期:1991.6
The photochemicalreactions of 2-R-2-phenyl[5,6: 7,8]dibenzo-2-silabicyclo[2.2.2]octanes (R = Ph, 1, R = Me, 5) in cyclohexane have been studied in the presence or absence of trapping agents such as methanol and methoxytrimethylsilane. The photolysis of 1 in the presence of methanol gave 9-(1,1-diphenylmethoxysilyl-3,3-dimethylbutyl)-9,10-dihydroanthracene as the major product and the methanol adduct
研究了2- R -2-苯基[5,6:7,8]二苯并-2-硅双环[2.2.2]辛烷(R = Ph,1,R = Me,5)在环己烷中的光化学反应。是否存在捕集剂,例如甲醇和甲氧基三甲基硅烷。1在甲醇存在下的光解得到9-(1,1-二苯基甲氧基甲硅烷基-3,3-二甲基丁基)-9,10-二氢蒽为主要产物,1,1-二苯基-2-新戊基甲硅烷基的甲醇加合物为次要产品。当使用三甲基甲氧基硅烷作为捕集阱时,仅少量分离出硅烷加合物,而未获得9,10-二取代的蒽产物。