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9H-Dibenzo[a,c]carbazole from microwave assisted Madelung\'s reaction of N-[2-(phenylmethyl)phenyl]benzamide
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1  Departamento de Química Orgánica. Facultade de Ciencias. Universidade de Santiago de Compostela. Campus de Lugo. Alfonso X el Sabio, 27002-Lugo, Spain

Abstract: Microwave irradiation of N-[2-(phenylmethyl)phenyl]benzamide with potassium tert-butoxide leads to a 1:1 ratio of the expected product from Madelung's reaction and 9H-Dibenzo[a,c]carbazole. This one seems to come from a competitive reaction pathway rather than from thermal conrotatory electrocyclic of 2,3-diphenyl- 3H-Indole.