Rates of ethanolysis of ethylenesulfonyl and 2-propene-1-sulfonyl chloride were found to be significantly faster and only slightly faster, respectively, than that of a saturated sulfonyl chloride. Although infrared and mass spectra suggest that in the case of the former there may be some allylic participation by the a double bond to give the resonance stabilized sulfonylium ion intermediate, enhancement of ethanolysis is not that great and probably is ...
