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- W1978596617 abstract "Die Pyrimidine 2a–2i reagieren mit Acetylendicarbonsäure-dimethylester (1) in siedendem Dimethylformamid über eine [4 + 2]-Cycloaddition zu den Pyridinderivaten 4a–4e, von denen sich 4a und 4d mit 1 zu 3-Dimethylaminobenzol-1,2,4,5-tetracarbonsäure-tetramethylester (5) weiter umsetzen. Cycloaddition Reactions with Azabenzenes, VIII1). – Reactions of Dimethylamino-and Methoxyprimidines with Dimethyl Acetylenedicarboxylate The pyrimidines 2a–2i react with dimethyl acetylenedicarboxylate (1) in boiling dimethylformamide by a [4 + 2]-cycloaddition reaction, forming the pyridines 4a–4e. Compounds 4a and 4d react with 1 giving tetramethyl 3-dimethylaminobenzene-1,2,4,5-tetracarboxylate (5)." @default.
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- W1978596617 date "1975-08-11" @default.
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- W1978596617 title "Cycloadditionen mit Azabenzolen, VIII1) Reaktionen von Dimethylamino- und Methoxypyrimidinen mit Acetylendicarbonsäure-dimethylester" @default.
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- W1978596617 doi "https://doi.org/10.1002/jlac.197519750609" @default.
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