... SOC., B 1971, 79. (31) Deslongchamps, P. "Stereoelectronic Effects in Organic (33) Clementi, S.; Katritzky, AR; Tarhan, H. 0. Tetrahedron Lett. Chemistry"; Pergamon Press: New York, 1983. 1975, 1395. Page 5. 146 J. Org. Chem., Vol. 51, No. 2, 1986 Scheme VI f ...