Allylation and highly diastereoselective syn or anti crotylation of N-toluenesulfonylimines using potassium allyl- and crotyltrifluoroborates.
Air and moisture stable potassium allyl- and crotyltrifluoroborates undergo addition to N-sulfonyl and N-sulfinyl aldimines in the presence of Lewis acids, to provide the corresponding homoallylic amines in high yields and excellent diastereoselectivity.
Li
Sze-Wan
SW
Department of Chemistry, University of Toronto, 80 St George Street, Toronto, Ontario, M5S 3H6, Canada.
Batey
Robert A
RA