Abstract
An efficient Ni(ClO4)2·6H2O/SMI-PHOX catalyzed enantioselective addition of arylboronic acids to cyclic N-sulfonyl aldimines is envisioned to afford excellent enantioselectivities (up to 99% ee) in high yields (up to 98%). This protocol offers new opportunities for the synthesis of chiral benzosultams containing a stereogenic tertiary carbon center. The highlights of this method include mild reaction conditions, the use of cheap metal catalyst and a wide substrate scope.
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