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Paper | Regular issue | Vol 48, No. 7, 1998, pp.1415-1422
Published online, 1st January, 1970
DOI: 10.3987/COM-98-8176
Preparation and Absorption Spectral Properties of the Nitrogen Analogs of a Pechmann Dye and Its Isomeric Pyrano[4,3-c]pyran-1,5-dione

Hajime Irikawa,* Norihide Adachi, and Hirokazu Muraoka

*Department of Chemisttry, Faculty of Science, Shizuoka University, Ohya, Shizuoka 422-8529

Abstract

Bathochromic shifts were observed by replacement of the lactone-oxygen atoms in a Pechmann dye with nitrogen atoms, while hypsochromic shifts were caused by replacement of the lactone-oxygen atoms in a pyrano[4,3-c]pyran-1,5-dione with nitrogen atoms.