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New synthesis of 1, 4-dihydro-1, 2, 4-triazino [3, 4-α] benzimidazoles

✍ Scribed by M. V. Povstyanoi; E. V. Logachev; P. M. Kochergin


Book ID
112325165
Publisher
Springer US
Year
1976
Tongue
English
Weight
51 KB
Volume
12
Category
Article
ISSN
0009-3122

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UDC 547.873'785.5'735 f 724.07:543.51 2-[(8-Ethyl-, arylimino)phenethyl]-l,2,4-triazino[2,3-a]benzimidazoles were obtained by reaction of 2-aroylmethyl-l,2,4-triazino[2,3-a]benzimidazol-4H-3-ones with ethyl(aryl)amines or urea. By the action of phosphorus oxychloride, these benzimidazoles cyclize in