Synthesis of the 3<i>H</i>-Azepines Utilizing the Thermolysis of Substituted Aryl Azides
作者:Yoshihiro Ohba、Shinji Kubo、Masaaki Nakai、Atsunori Nagai、Masayo Yoshimoto
DOI:10.1246/bcsj.59.2317
日期:1986.7
Thermolysis of several p-substituted aryl azides (p-R-C6H4N3; R=COCH3, CO2CH3, COPh) in methanol gave 5-substituted 2-methoxy-3H-azepines in moderate yields. Thermolysis of m-substituted aryl azides (m-R-C6H4N3; R=COCH3, CO2CH3, COPh, NO2) gave 4-substituted 2-methoxy-3H-azepines and 6-substituted 2-methoxy-3H-azepines in good yields. In contrast, thermolysis of p-azidoacetophenone in piperidine gave
几种对位取代的芳基叠氮化物(pR-C6H4N3;R=COCH3、CO2CH3、COPh)在甲醇中的热解得到中等产率的 5-取代的 2-甲氧基-3H-氮杂。间位取代的芳基叠氮化物(mR-C6H4N3;R=COCH3、CO2CH3、COPh、NO2)的热解得到 4-取代的 2-甲氧基-3H-氮杂和 6-取代的 2-甲氧基-3H-氮杂。相比之下,哌啶中对叠氮基苯乙酮的热解得到 5-乙酰基-2-哌啶基-3H-氮杂和一种不寻常的产物,6-乙酰基-2-哌啶基-3H-氮杂和对氨基苯乙酮。