Oxidation of 2-ethyl-1-methoxycarbonyl-1,4,5,10b-tetrahydro-2H-azetopyridoindole with m-chloroperbenzoic acid (mCPBA) at room temperature gives 3,6-epoxyhexahydroazocino[5,6-b]indole via Meisenheimer rearrangement of the intermediate N-oxide. On the other hand, oxidation of the corresponding 1-hydroxymethyl derivative forms the cis-N-oxide which then undergoes rearrangement at 55 °C in THF to yield a mixture of azocino[5,6-b]indole and N-hydroxytetrahydro-β-carboline.
2-乙基-1-甲氧羰基-1,4,5,10b-四氢-2H-氮杂
吲哚与
间氯过氧苯甲酸(mCPBA)在室温下氧化,通过中间体N-氧化物的梅森海默重排反应生成3,6-环氧六氢氮杂
吲哚。另一方面,氧化相应的1-羟甲基衍
生物形成顺式-N-氧化物,然后在55℃下在THF中进行重排反应,生成氮杂
吲哚[5,6-b]
吲哚和N-羟基四氢-β-咔啉的混合物。