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Molecules 2011, 16(12), 10256-10268; doi:10.3390/molecules161210256

The Photochemistry of Benzotriazole Derivatives. Part 2: Photolysis of 1-Substituted Benzotriazole Arylhydrazones: New Route to Phenanthridin-6-yl-2-phenyldiazines

Department of Chemistry, Faculty of Science, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait
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Author to whom correspondence should be addressed.
Received: 11 November 2011 / Revised: 23 November 2011 / Accepted: 28 November 2011 / Published: 8 December 2011
(This article belongs to the Section Organic Synthesis)
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Abstract

Irradiation of 1-substituted benzotriazole arylhydrazones 3a–c, 4a,b and 5a,b with a 16 W low pressure mercury arc-lamp (254 nm) for 24 h gave phenanthridin-6-yl-2-phenyldiazines 9a–c, phenanthridin-6(5H)-ones 10a–c, 1-anilinobenzimidazoles 11a–c, 2-aryl-1H-benzimidazoles 12a–c, 1-arylamino-1H-benzimidazol-2-carboxylic acid ethyl esters 14a,b, 1-aryl-1H, 9H-benzo [4,5][1,2,3] triazolo[1,2-a]tetrazole-3-carboxylic acid ethyl esters 16a,b, 1-arylamino-2-benzoylbenzimidazoles 18a,b and 2-benzoylbenzoxazole 21.
Keywords: 1,2,3-benzotriazole; phenanthridin-6-yl-2-phenyldiazine; phenanthridin-6(5H)-one; 1-anilinobenzimidazole; 1H-benzimidazole; 2-benzoyl-1H-benzoxazole; photolysis 1,2,3-benzotriazole; phenanthridin-6-yl-2-phenyldiazine; phenanthridin-6(5H)-one; 1-anilinobenzimidazole; 1H-benzimidazole; 2-benzoyl-1H-benzoxazole; photolysis
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Al-Jalal, N.A.; Ibrahim, M.R.; Al-Awadi, N.A.; Elnagdi, M.H. The Photochemistry of Benzotriazole Derivatives. Part 2: Photolysis of 1-Substituted Benzotriazole Arylhydrazones: New Route to Phenanthridin-6-yl-2-phenyldiazines. Molecules 2011, 16, 10256-10268.

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