Quinone Imides. XXXVII. Conversion of p-Quinone Diimides to Indoles

R Adams, WP Samuels Jr

Index: Adams; Samuels Journal of the American Chemical Society, 1955 , vol. 77, p. 5375,5376

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Citation Number: 11

Abstract

Method D.--IVone of the preceding methods was succew ful in attempted preparations of N- (2-benzimidazolyl)-l, 4-benzodioxan-2-carboxamide (compd. 26), which was therefore synthesized as follows: To a solution of 5.32 g. of 2-aminobenzimidazole in 80 ml. of dry pyridine was added with stirring and cooling in ice 8 g. of the acid chloride IV in small portions over one hour. The ice-bath was removed and stirring continued at room ...