Condensed isoquinolines. 36*. Cyclization of N-alkyl-3-(2-benzoylbenzyl)azolium salts. A novel method of preparing azolo[b]isoquinolines
作者:L. M. Potikha、V. V. Sypchenko、V. A. Kovtunenko
DOI:10.1007/s10593-010-0632-9
日期:2010.12
A novel method is proposed for the preparation of azolo[b]isoquinolines based on the alkylation of N-alkyl-1,3-diazoles or 1,3-thiazole derivatives using [2-(bromomethyl)phenyl](phenyl)methanone with subsequent cyclization of the quaternary azolium salts in the presence of base. The 10(11)-hydroxy derivatives of the 5,10-dihydro-1H-imidazo[1,2-b]isoquinolinium, 6,11-dihydro-5H-benzimidazo-[1,2-b]isoquinolinium
提出了一种基于N-烷基-1,3-二唑或1,3-噻唑衍生物的烷基化制备偶氮[b]异喹啉的新方法,该方法使用[2-(溴甲基)苯基](苯基)甲酮,随后进行在碱存在下将季氮鎓盐环化。5,10-二氢-1H-咪唑并[1,2-b]异喹啉鎓的10(11)-羟基衍生物6,11-二氢-5H-苯并咪唑并[5,10]以这种方式获得的-二氢-1H- [1、2、4]三唑[4,3-b]异喹啉或5,10-二氢[1,3]-噻唑[3,2-b]异喹啉溴化物容易丢失在与HBr或Ac 2 O加热后生成一分子水,得到相应的准芳族氮杂[b]异喹啉鎓盐。