作者:Martin Gerdin、Christina Moberg
DOI:10.1002/adsc.200505016
日期:2005.5
Silaboration of 1,3-cyclohexadiene in the presence of Pt(acac)2, DIBALH, and a phosphoramidite prepared from (S)-1,1′-bi-2-naphthol and diisopropylamine led to (1R,4S)-1-(dimethylphenylsilyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-cyclohexene with 70% ee. Chiral catalysts based on Ni gave no or essentially racemic product, whereas complexes containing Pd were inactive.
在Pt(acac)2,DIBALH和由(S)-1,1'-bi-2-萘酚和二异丙胺制得的亚磷酰胺存在下1,1,3-环己二烯的硅烷化反应导致(1 R,4 S)-具有70%ee的1-(二甲基苯基甲硅烷基)-4-(4,4,5,5-四甲基-1,3,2-二氧杂硼烷-2-基)-2-环己烯。基于Ni的手性催化剂不产生或基本上不产生外消旋产物,而含Pd的配合物则无活性。