Enantioselective conjugate addition of benzotriazole to α,β-enones catalyzed by prolinol derivatives with moderate yields and enantioselectivities was reported. Studies of stereoelectronic effects of the catalyst showed that the transition state could be of a hydrogen bonding activation mode, and fine tuning of the substituents on the aryl moiety of the catalyst is important for the reaction stereoselectivities.
报道了以脯
氨醇衍
生物催化苯并三嗪与α,β-烯酮的对映选择性加合反应,得到了中等的产率和对映选择性。对催化剂的立体电子效应研究表明,过渡态可能采用氢键活化模式,并且催化剂芳基部分取代基的精细调节对反应的立体选择性很重要。