Diazapolycyclic compounds—XIVTetrahedron33, 2109 (1977).
作者:F. Gómez Contreras、M. Lora-Tamayo、P. Navarro、M. Pardo
DOI:10.1016/0040-4020(78)80238-5
日期:1978.1
Epoxidation by m-chloroperbenzoic acid of adducts obtained by Diels-Alder reaction of pyridazine-1,4-dione, phthalazine-1,4-dione and benzo(g)phthalazine-1,4-dione with substituted 1,3-butadienes is reported. Although the epoxidation takes place in most of the cases in good yields, no reaction is observed in adducts which lack electron-donating groups attached to the double bond, and their epoxides
环氧化米由哒嗪-1,4-二酮,酞嗪-1,4-二酮和苯并(克)酞嗪-1,4-二酮的Diels-Alder反应得到的加合物的氯过苯甲酸与取代的1,3-丁二烯是报告。尽管在大多数情况下环氧化反应均以高收率进行,但在缺少连接至双键的给电子基团的加合物中未观察到反应,它们的环氧化物必须从相应的溴代醇中获得。根据取代基在哌啶嗪环中的位置,该反应提供单一产物或顺式和反式异构体的混合物。从它们的1 H NMR光谱和X射线衍射方法研究了这些化合物的立体化学。