Chemistry of Heterocyclic Compounds p. 570 - 574 (2004)
Update date:2022-09-26
Topics:
Dzvinchuk
Kartashov
Vypirailenko
Doller
Lozinskii
The possibility has been studied of converting quaternary 3-anilino-1,5-dimethylpyrazolium salts into 3-anilino-1,5-dimethylpyrazole, the first representative of the 1-alkyl-3-arylaminopyrazoles. The dependence of the reaction direction on the nature of the substituent at position 2 has been clarified. The most effective result was obtained with a cyanoethyl substituent. On boiling the initial salt with aqueous ammonia the target product is isolated in quantitative yield. Syntheses of the initial salts are described. C-Sulfonation was detected on interacting 3-anilino-1-benzoyl-3-methylpyrazole and dimethyl sulfate, with the formation of p-(3-amino-1,2,5-trimethylpyrazolio) benzenesulfonate.
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Doi:10.1039/b501446h
(2005)Doi:10.1021/om0489960
(2005)Doi:10.1002/jlcr.1014
(2005)Doi:10.1021/ja050179j
(2005)Doi:10.1021/jo00161a021
(1983)Doi:10.1021/ja01877a034
(1939)