Claisen- Schmidt缩合反应 Ar-CHo R 浓碱 Ar^R(高产率) Ar-cHo+RcH,cHo-浓碱 cHo(副反应多) Ar PhCHO+ Chr cHo 15% NaOH CHO Ph 32%0 2CH3CHO→ CHO CHO CHO 浓碱 H 心CH OHAr CHO RCH2 CHO Ar CHO R Ar CHO Ar R O R 浓碱 + 浓碱 + (高产率) (副反应多) Claisen-Schmidt缩合反应 Ph CHO CHO OH CHO H2 C CHO H O H O O O H2 O O OH O O PhCHO + CH3 CHO 15% NaOH 32% 浓碱 2CH3 CHO n