Journal of the American Chemical Society

The Reaction of Malononitrile with Hydrazine1, 2

EC Taylor, KS Hartke

文献索引：Taylor; Hartke Journal of the American Chemical Society, 1959 , vol. 81, p. 2452,2455

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被引用次数: 56

摘要

Method B.-A mixture of 4.4 g. of l-phenyl-3-amino-5-pyrazolone, 4 ml. of ethyl acetoacetate and 50 ml. of ethanol, in which was dissolved 0.5 g. of sodium, was heated under reflux and stirred for 1 hour. The reaction mixture, which contained a cream-colored precipitate, was cooled, diluted with ether and filtered. The collected solid was dissolved in 50 ml. of water and the pH adjusted to 4-5 with acetic acid. Filtration then yielded 3.4 g.(56%) of a ...