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Paper | Regular issue | Vol 29, No. 11, 1989, pp.2109-2114
Published online, 1st January, 1970
DOI: 10.3987/COM-89-5108
Synthesis and Crystal Structure of Naphtho[2,1-b][1,5]naphthyridine

Isao Takeuchi, Yoshiki Hamada,* and Kimio Okamura

*Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tenpaku, Nagoya 468-8503, Japan

Abstract

A modified Skraup reaction was carried out on 2-aminobenzo-[f]quinoline (1), in the presence of sulfo-mix, using ferrous sulfate and boric acid. This reaction gave the linear type product, naphtho-[2,1-b][1,5]naphthyridine (2), but not the angular type. Its crystal structure was determined by X-ray analysis.