Does the wittig-still rearrangement proceed via a metal free carbanion?
作者:Birgit Kruse、Reinhard Brückner
DOI:10.1016/s0040-4039(00)97638-x
日期:1990.1
The steric course of [2,3] rearrangements of allyloxy methanides is almost not affected by the counterion (M = Li, Na, K, Rb, Cs) as demonstrated by the nearly metal independent E,Z and anti,syn selectivities of rearrangements 4 → 6 and 7 → 8, respectively.