A CATALYTIC ENANTIOSELECTIVE REACTION USING A C2-SYMMETRICAL DISULFONAMIDE AS A CHIRAL LIGAND - CYCLOPROPANATION OF ALLYLIC ALCOHOLS BY THE ET2ZN-CH2I2-DISULFONAMIDE SYSTEM
CYCLOPROPANATION;
SIMMONS-SMITH REACTION;
CHIRAL LEWIS ACID;
ENANTIOSELECTIVE REACTION;
DISULFONAMIDE;
D O I:
10.1016/S0040-4039(00)92246-9
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
The first catalytic, enantioselective Simmons-Smith cyclopropanation of an allylic alcohol has been achieved by the reaction of an allylic alcohol with Et2Zn and CH2I2 in the presence of a catalytic amount of chiral disulfonamide 1.