Acyclic stereocontrol through the metalla-claisen rearrangement. Part II
作者:Ilane Marek、Jean F. Normant
DOI:10.1016/s0040-4039(00)79441-x
日期:1991.10
The metalla-Claisen rearrangement reported here, leads to 1,1-dimetallic compounds where three asymmetric centers are obtained with good diastereoselection.
First transfer of chirality in the Fritsch-Buttenberg-Wiechell rearrangement, via zinc carbenoids: A migration with retention of configuration
作者:Isabelle Creton、Hadi Rezeaï、Ilan Marek、Jean F. Normant
DOI:10.1016/s0040-4039(99)00090-8
日期:1999.3
Carbozincation of a metallated propargylic ether can lead to a gem bismetallic reagent with a good 1,3-diastereoselection. This latter can be relayed to a 1,4-diastereoselection, when the gembismetallic thus formed is monohalogenated to give a carbenoid which rearranges at room temperature. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.