The Eu(III)-catalyzed cyanosilylations of chiral α-alkoxy and α-amino aldehydes are shown to exhibit syn diastereofacial selection, the degree increasing with an increase in steric bulk of the alkyl chain in the aldehydes. The mechanism of this catalytic process is discussed.
研究表明,Eu(III)催化的手性α-烷氧基和α-
氨基醛的
氰硅化反应展现出了syn二面体选择性,且随着醛中烷基链空间位阻的增加,其选择性也增强。同时还讨论了这一催化过程的机理。