1,3-Diene-2,3-diyl diesters are synthesized by rhodium-catalyzed homocoupling of (1-acyloxyvinyl)silanes. Double transmetalation between vinylsilane and rhodium intermediate in a single catalytic cycle is the key in this reaction. From the homocoupling products, symmetrical α-diketone and its monoacetal are easily synthesized.
1,3-二烯-2,3-二酯是通过
铑催化 (1-acyloxyvinyl)silanes 的均偶联反应合成的。
乙烯基硅烷和
铑中间体在一个催化循环中发生双反
金属化是该反应的关键。从均偶联产物中很容易合成对称的 δ-二酮及其单
缩醛。