Heterocyclic compounds from urea derivatives. Part XII. Ethoxycarbonylhydrazine as a source of 1,2,4-triazoles
作者:Frederick Kurzer、David R. Hanks
DOI:10.1039/j39670000746
日期:——
Interaction of equimolar quantities of carbodi-imides and ethoxycarbonylhydrazine in dimethylformamide yields 1-(NN′-diarylamidino)-2-ethoxycarbonylhydrazines, which are readily cyclised, with loss of ethanol, to 4-aryl-3-arylamino-5-hydroxy-1,2,4-triazoles. Ring-closure to the corresponding 5-ethoxy-heterocycles, with loss of water, occurred in one case.
Guha; Dutta, Journal of the Indian Chemical Society, 1929, vol. 6, p. 72
作者:Guha、Dutta
DOI:——
日期:——
4-substituierte 1-Carbäthoxythiosemicarbazide und ihre Umsetzung in 4-substituierte Thiourazole Mitteilung: Zur Chemie der substituierten Thiosemicarbazide und Thioharnstoffe
作者:M. Tišler
DOI:10.1002/ardp.19592920207
日期:——
Fromm; Nehring, Chemische Berichte, 1923, vol. 56, p. 1374