ARYL NITRILE OXIDE CYCLOADDITION REACTIONS IN THE PRESENCE OF BAKERS-YEAST AND BETA-CYCLODEXTRIN

Contrary to recent reports, baker's yeast is not required for reaction s of nitrile oxides with either ethyl cinnamate or 4-vinylpyridine to give isoxazolines. beta-Cyclodextrin may alter the ratio of isomers is olated from the reactions of the cinnamate but only at concentrations of reactants much lower than those reported, and this effect is most l ikely due to selective product complexation rather than selective prod uct formation.