An asymmetric Heck reaction−carbanion capture process was realized for the first time, making possible the catalytic asymmetricsynthesis of various functionalized bicyclo[3.3.0]octane derivatives 6 in up to 94% ee. Sodium bromide had interesting effects on this asymmetric Heck reaction−carbanion capture process, and these effects were useful for improving the enantiomeric excess. Furthermore, the
作者:Masahiko Iyoda、Takahiro Kushida、Sumiko Kitami、Masaji Oda
DOI:10.1039/c39870001607
日期:——
A shortsynthesis of the marine triquinane sesquiterpene capnell-9(12)-ene based on titanium-induced oxo ester cyclization as the key step for construction of the cis-transoid-cis-tricyclo[6.3.0.02,6]undecane skeleton is described.