期刊
MENDELEEV COMMUNICATIONS
卷 27, 期 3, 页码 231-233出版社
ELSEVIER
DOI: 10.1016/j.mencom.2017.05.004
关键词
-
资金
- Russian Foundation for Basic Research [15-03-08195 A]
Cyclization of o-alkynylbenzaldehydes with o-diamino-benzenes in DMSO under the sequential action of NH4Br and K2CO3 affords 11-arylmethylidene-11H-isoindolo[2,1-a]benzimidazoles as a result of 5-exo-dig ring closure; whereas replacement of treating with K2CO3 by heating at 110-115 degrees C results in 6-endo-dig cyclization with formation of 6-aryl-benzimidazo[2,1-a]isoquinolines.
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