Stereoselective synthesis of 3-butylphtalide via CBS catalytic reduction
Stereoselective synthesis of 3-butylphtalide via CBS catalytic reduction
摘要
Optically active 3-butylphtalide of high enantiomeric excesses (up to 93% e.e.) was synthesized from the reduction of o-pentanoylbenzoic ester with borane using B-methyloxyoxazaborolidine (1b) as the chiral catalyst.
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