Control of diastereoselectivity in metal-catalyzed 1,3-dipolar cycloaddition between diphenylnitrone and chiral auxiliary-substituted crotonyl amide

Article abstract of DOI:10.1016/S0040-4020(99)00469-X

The 1,3-dipolar cycloaddition (1,3-DC) between diphenyl nittone (1) and 4-(S)benzyl-((E)-2'-butenoyl)-1,3-oxazolidin-2-one (2) was studied in the presence of several inorganic salts whose cations behave as Lewis acid. Depending on the salt and the experim