Studies on the Blue Pigments Produced from Genipin and Methylamine. I. Structures of the Brownish-Red Pigments, Intermediates Leading to the Blue Pigments
Autor: | H. Inouye, M. Yatsuzuka, IKuo Kawamura, Yoshio Takeda, T. Shingu, Takeshi Ikumoto, T. Yokoi, Ryousuke Touyama, Kenichiro Inoue |
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Rok vydání: | 1994 |
Předmět: | |
Zdroj: | Chemical and Pharmaceutical Bulletin. 42:668-673 |
ISSN: | 1347-5223 0009-2363 |
Popis: | During the course of studies on the blue pigment formation by the reaction of genipin with methylamine, nine red to brownish-red intermediary pigments were obtained under conditions excluding oxygen. They were identified as monomer, dimer, trimer and tetramer of 2-methyl-4-carbomethoxy-2-pyrindine derivatives on the basis of spectroscopic evidence. |
Databáze: | OpenAIRE |
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