Cinchona Alkaloid-Catalyzed Enantioselective Monofluoromethylation Reaction Based on Fluorobis(phenylsulfonyl)methane Chemistry Combined with a Mannich-type Reaction
A catalytic protocol for the unprecedented enantioselectivemonofluoromethylation of in situ generated prochiral imines using 1-fluorobis(phenylsulfonyl)methane (FBSM, 1) in the presence of a chiral PTC based on the Mannich-type reaction followed by reductive desulfonylation has been developed.