Palladium(0)-catalysed addition of (Me3Sn)2 to the α,β-acetylenic esters (1a–n) and amides (4a–d) provides the (Z)-2,3-bis(trimethylstannyl)alk-2-enoates (2a–n) and the (E)-2,3-bis(trimethylstannyl)alk-2-enamides (6a–d), respectively; thermolysis of (2a–h) transforms these substances into the corresponding (E)-isomers (3a–h).
钯(0)催化将(Me 3 Sn)2加到α,β-炔属酸
酯(1a - n)和
酰胺(4a - d)中,得到(Z)-2,3-双(
三甲基锡烷基)烷基2-
烯酸
酯(2a – n)和(E)-2,3-双(
三甲基锡烷基)烷-2-
烯酰胺(6a – d);(2a - h)的热分解将这些物质转化为相应的(E)异构体(3a - h)。