3,4-Dihydroisoquinoline-N-oxide 1 reacted readily with both acyclic (Z)- and (E)-disubstituted alkenes bearing electron-attracting substituents (methoxycarbonyl, cyano, phenylsulphonyl and benzoyl groups) and with cyclic derivatives (e.g. maleimides) to give mixtures of the two possible diastereoisomers. Similar amounts of - and -adducts were formed in the reactions of (Z)-cyano, methoxycarbonyl and
3,4-二氢异喹啉-N-氧化物1易于与带有吸电子取代基(甲氧羰基,
氰基,苯磺酰基和苯甲酰基)的无环(Z)-和(E)-二取代烯烃和环状衍
生物(例如马来
酰亚胺)反应生成给出两种可能的非对映异构体的混合物。在(Z)-
氰基,甲氧基羰基和苯甲酰基衍
生物的反应中形成相似量的-和-加合物,而在(Z)-(苯基磺酰基)和环状衍
生物的情况下-加成明显胜过其-对应物。在1与富电子烯烃[[Z]-
二苯乙烯,
碳酸亚乙烯酯,等]的缓慢反应中也观察到了高选择性。