酸催化:
1、烯醇化:RCH2CHO + H+ → RCH2CH=OH+ → RCH=CHOH + H+
2、亲核加成:RCH=CHOH + RCHO → RCHOH-CH(R)-CHO
碱催化:
1、烯醇化:RCH2CHO + OH- → -CH(R)CH=O → RCH=CHO-
2、亲核加成:RCH=CHO- + RCHO → RCHOH-CH(R)-CHO
酸催化:
1、烯醇化:RCH2CHO + H+ → RCH2CH=OH+ → RCH=CHOH + H+
2、亲核加成:RCH=CHOH + RCHO → RCHOH-CH(R)-CHO
碱催化:
1、烯醇化:RCH2CHO + OH- → -CH(R)CH=O → RCH=CHO-
2、亲核加成:RCH=CHO- + RCHO → RCHOH-CH(R)-CHO