Tetrahedron p. 5691 - 5700 (1992)
Update date:2022-08-04
Topics: Aldehydes Alkylation
Takahashi, Hideyo
Kawakita, Takashi
Ohno, Masaji
Yoshioka, Masato
Kobayashi, Susumu
Excellent enantioselective alkylation of aldehydes with dialkylzinc has been developed.This methodology is based on the concept of modifying the Lewis acid with a C2-symmetric, electron-withdrawing disulfonamide.The chiral Lewis acid catalysts used in the present study are the titanium complexes, prepared in-situ from disulfonamide and Ti(O-i-Pr)4.Key Words: Chiral disulfonamide; chiral titanium complex; enantioselective alkylation; dialkyl zinc; catalytic reaction
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