CONTROL OF REGIOCHEMISTRY IN NITRONE CYCLOADDITIONS. REGIOSELECTIVITY OF THE REACTIONS OF TRISUBSTITUTED NITRONES WITH ELECTRON-DEFICIENT AND CONJUGATED DIPOLAROPHILES

Article abstract of DOI:10.1016/S0040-4020(01)89503-X

Triphenylnitrone 1a and C,C-diphenyl-N-methylnitrone 1b reacted at r.t. with monosubstituted alkenes bearing an electron-attracting group (i.e., formyl, acetyl, cyano, methoxycarbonyl, sulfonyl and nitro groups) to give kinetically controlled mixtures of