Beitr�ge zur Chemie der Enaminoketone, 15. Mitt.: Die Dreikomponentensynthese von Hydrazinomethylenchromandionen und eine reduktive N-N-Bindungsspaltung von Phenylhydrazin
摘要:
The three-component reaction of 4-hydroxycoumarin, ethylorthoformiate, and different substituted hydrazines is described. p-Nitrophenylhydrazine, hydrazides and phenylsemicarbazide lead to the expected hydrazinomethylene-chromandiones 2a-f. Reaction of 4-hydroxycoumarin, ethylorthoformiate, and phenylhydrazine or p-tolyl-hydrazine does not yield 2, but the anilino-methylene-chromandiones 6a-b. This indicates a reductive N-N bond cleavage to aniline and ammonia under mild conditions.
v.Pechmann; Wedekind, Chemische Berichte, 1895, vol. 28, p. 1695
作者:v.Pechmann、Wedekind
DOI:——
日期:——
Triazines. XIX. Some Reactions of S-Triazine with Hydrazine and its Organic Derivatives
作者:Christoph Grundmann、Alfred Kreutzberger
DOI:10.1021/ja01568a047
日期:1957.6
Beitr�ge zur Chemie der Enaminoketone, 15. Mitt.: Die Dreikomponentensynthese von Hydrazinomethylenchromandionen und eine reduktive N-N-Bindungsspaltung von Phenylhydrazin
作者:H. Junek、C. Reidlinger
DOI:10.1007/bf00807432
日期:1995.5
The three-component reaction of 4-hydroxycoumarin, ethylorthoformiate, and different substituted hydrazines is described. p-Nitrophenylhydrazine, hydrazides and phenylsemicarbazide lead to the expected hydrazinomethylene-chromandiones 2a-f. Reaction of 4-hydroxycoumarin, ethylorthoformiate, and phenylhydrazine or p-tolyl-hydrazine does not yield 2, but the anilino-methylene-chromandiones 6a-b. This indicates a reductive N-N bond cleavage to aniline and ammonia under mild conditions.