Electrochemical cyclization of 1-phenyl-2(-1′chlorophenyl)-substituted five-membered nitrogen heterocycles. Application to the synthesis of phenanthridines
作者:James Grimshaw、S. Armstrong Hewitt
DOI:10.1039/p19900002995
日期:——
Pyrrolo[1,2-f]phenanthridine (compound 4), 3-phenylimidazo[1,2-f]phenanthridine 8, tetrazolo[1,5-f]phenanthridine 11 and benzo[c]tetrazolo[1,5-f]phenanthridine 12 have been prepared using an electrochemical cyclization procedure. Treatment of the imidazophenanthridine with singlet oxygen yields a phenanthridone by degradation of the heterocyclic system. Lithium aluminium hydride reduction of the t
吡咯并[1,2 ˚F ]
菲啶(化合物4),3-苯基
咪唑并[1,2 ˚F ]
菲啶8,
四唑并[1,5- ˚F ]
菲啶11和苯并[ C ^ ]
四唑并[1,5-F]
菲啶12已使用电
化学环化程序制备。用单线态氧处理
咪唑并
菲啶通过杂环系统的降解产生
菲啶酮。氢化
锂铝还原
四唑菲啶而得到
菲啶。