Oct. 1981 Condensation Reaction of 3,4Dibenzoyl-l-methyl-2,5-diphenylpyrrole and -1-phenylpyrazole with Methylamine Derivatives Affording Pyrrolo [3,4c]pyridine and 2H-Pyrazolo[3,4-c]- and [4,3-c]pyridines Shuntaro Mataka, Kazufumi Takahashi, and Masashi Tashiro * Research Institute of Industrial Science, Kyushu University 86, Hakozaki, Higashi-ku, Fukuoka 812, Japan Received February 9, 1981 ... The reaction of 3,4-dibenzoyl-l-methyl-2,5-diphenylpyrrole