A base-controlled regioselective synthesis of allyl and vinyl phenyl sulfones
作者:Dibyendu Dana、Anibal R. Davalos、Gopal Subramaniam、Nisar Afzal、William H. Hersh、Sanjai Kumar
DOI:10.1016/j.tetlet.2013.03.056
日期:2013.5
2-arylacetaldehydes in the presence of a catalytic excess of sodium hydride (1.1 equiv) yields allylphenylsulfones in excellent yield under mild reaction conditions. In contrast, when less than 1 equiv of sodium hydride (0.90 equiv) is used, the corresponding vinyl phenylsulfones are obtained exclusively. The vinyl phenylsulfones can be completely converted to allylphenylsulfones with only 0.2 equiv