Rhodium-Catalyzed Stereoselective Formation of <i>Z</i>-Enamines from Allylaziridines
作者:France-Aimée Alphonse、Andrei K. Yudin
DOI:10.1021/ja0632557
日期:2006.9.1
Rhodium (I)-catalyzedisomerization of N-allylaziridines affords isolable Z-enamines in excellent yields and with high stereoselectivity. Cationic [Rh(BINAP)(COD)]OTf and RhH(CO)(PPh3)3 follow the same selectivity toward the Z-isomers. This selectivity is not observed with other N-allylamines which give the thermodynamically more stable E-isomers. These unexpected results suggest a possible deviation