Stereoselective 1,4-Silaboration of 1,3-Dienes Catalyzed by Nickel Complexes
摘要:
The silicon-boron bond of (dimethylphenylsilyl)pinacolborane was stereoselectively added to acyclic 1,3-dienes in a 1,4-fashion to give (Z)4-boryl-1 -silyl-2-alkene derivatives in the presence of a Ni(0) catalyst generated from Ni(acac)(2) and diisobutylaluminum hydride, 1,4-Silaboration of cyclic 1,3-dienes required the use of cyclohexyldiphenylphosphine with the Ni(0) catalyst to afford cis-1-boryl-1-silyl-2-cycloalkene derivatives in high yields with high stereoselectivities.
Stereoselective 1,4-Silaboration of 1,3-Dienes Catalyzed by Nickel Complexes
作者:Michinori Suginome、Takanori Matsuda、Takayo Yoshimoto、Yoshihiko Ito
DOI:10.1021/ol990908y
日期:1999.11.1
The silicon-boron bond of (dimethylphenylsilyl)pinacolborane was stereoselectively added to acyclic 1,3-dienes in a 1,4-fashion to give (Z)4-boryl-1 -silyl-2-alkene derivatives in the presence of a Ni(0) catalyst generated from Ni(acac)(2) and diisobutylaluminum hydride, 1,4-Silaboration of cyclic 1,3-dienes required the use of cyclohexyldiphenylphosphine with the Ni(0) catalyst to afford cis-1-boryl-1-silyl-2-cycloalkene derivatives in high yields with high stereoselectivities.
Regio- and stereoselective synthesis of boryl-substituted allylsilanes via transition metal-catalyzed silaboration
作者:Michinori Suginome、Yoshihiko Ito
DOI:10.1016/s0022-328x(03)00441-8
日期:2003.8
yield 2-borylallylsilane selectively. The 2-borylallylsilanes served as useful allylation reagents in Lewis acid-mediated reactions with acetals and aldehydes. In addition to the simple allylation reactions, a cascade reaction to form the trans-9-boryl-1,2-benzooxadecalin skeleton and a cyclization reaction to form cyclic alkenylboranes were achieved by the use of 2-borylallylsilanes as key reagents. Reactions