Efficient Activation of Acetals, Aldehydes, and Imines toward Silylated Nucleophiles by the Combined Use of Catalytic Amounts of [Rh(COD)Cl]<sub>2</sub>and TMS-CN under Almost Neutral Conditions
作者:Tsunehiko Soga、Haruhiro Takenoshita、Masaaki Yamada、Teruaki Mukaiyama
DOI:10.1246/bcsj.63.3122
日期:1990.11
In the presence of a catalytic amount of a transition metal compound such as [Rh(COD)Cl]2, Co(acac)2, or NiCl2, trimethylsilyl cyanide smoothly reacts with acetals to form α-methoxy carbonitriles in good yields. In the coexistence of catalytic amounts of [Rh(COD)Cl]2 and TMS-CN, silyl enol ethers or ketene silyl acetals react with acetals, aldehyes, or imines to yield the corresponding coupling products in good yields under almost neutral conditions.
在[Rh(COD)Cl]2、Co(acac)2或NiCl2等过渡金属化合物的催化量存在下,三甲基硅基氰与缩醛顺利反应,以良好的产率生成α-甲氧基腈。在[Rh(COD)Cl]2和TMS-CN的催化量共存下,硅基烯醇醚或烯酮硅基缩醛与缩醛、醛或亚胺反应,在近乎中性的条件下以良好的产率生成相应的偶联产物。