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- W3005679531 abstract "The reaction of 6- and 8-chloroacetylaminopyrimidinoanthrones with pyridine in the case of the 8-isomer leads to the formation of a pyridone ring, while in the case of the 6-isomer it stops at the formation of the ω-pyridinium salt. The latter, like ω-pyridinium salts obtained from the 8-isomer and 1-chloroacetylaminoanthraquinone, is cyclized under the action of aniline. In this case aminopyridonoanthrapyrimidines and 1-aminoanthrapyridone are obtained. The cyclic salt, in turn, is converted to an amine, and by reductive elimination of a pyridinium group, to an unsubstituted pyridonoanthrapyrimidine. The acetylation of amines leads to the formation of an oxazole ring. Pyridonoanthrapyrimidines can also be produced from α-amino-derivatives of anthrapyridone by cyclization of dimethylformamidinium salts." @default.
- W3005679531 created "2020-02-24" @default.
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- W3005679531 date "1985-01-08" @default.
- W3005679531 modified "2023-09-24" @default.
- W3005679531 title "ChemInform Abstract: SYNTHESIS OF PYRIDONOANTHRAPYRIMIDINES" @default.
- W3005679531 doi "https://doi.org/10.1002/chin.198501235" @default.
- W3005679531 hasPublicationYear "1985" @default.
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