A new strategy for the transformation of terminalalkynes to branched allylic sulfones was developed. Using a Rh(I)/DPEphos/benzoic acid catalyst system, terminalalkynes react with sulfonyl hydrazides to produce branched allylic sulfones with good to excellent yields and selectivities in general.
SYNTHESIS OF SUBSTITUTED VINYL SULFONES VIA DEACYLATION
作者:Hiroshi Kotake、Katsuhiko Inomata、Manabu Sumita
DOI:10.1246/cl.1978.717
日期:1978.7.5
It was found that the anions of β-ketosulfones reacted with formaldehyde to give the corresponding vinyl sulfones via deacylation, which provides a new preparative method for olefinic bonds.