イソヒノリン誘導体及び関連化合物の合成研究(第35報)ピリミジノイソヒノリン類の二重結合転移及び赤外吸収スペクトルによる推定構造

抄録

In the preceding paper it was shown that two kinds of pyrimidinoisoquinoline of a higher and lower melting point were obtained by the cyclization of N-(p-nitrobenzoyl-β-alanyl)-β-3, 4-dimethoxyethylamine. Later, the structure of two were examined through the infrared spectra and some conclusions were drawn from them. A newer method for their mutual transformation method was found and successfully achieved by boiling the lower-melting substance with 10% hydrochloric acid. Furthermore, the same reaction was found to occur between compounds having no nitro group.