Condensation of ethyl (ethoxymethylene)cyanoacetate with acyl- and diphenylphosphinylhydrazines

Authors
Bagrov, FV
Citation
Fv. Bagrov, Condensation of ethyl (ethoxymethylene)cyanoacetate with acyl- and diphenylphosphinylhydrazines, RUSS J G CH, 70(3), 2000, pp. 422-425
Citations number
10
Categorie Soggetti
Chemistry
Journal title
RUSSIAN JOURNAL OF GENERAL CHEMISTRY
ISSN journal
10703632 → ACNP
Volume
70
Issue
3
Year of publication
2000
Pages
422 - 425
Database
ISI
SICI code
1070-3632(200003)70:3<422:COE(WA>2.0.ZU;2-C
Abstract
Condensation of ethyl (ethoxymethylene)cyanoacetate with hydrazides of diph enylphosphinic acid and aliphatic and aromatic acids in ethanol involves ex clusively the ethoxymethylene group and yields the corresponding ethyl 3-ox o-2-cyanopropanoate hydrazones. These compounds exist in the crystalline st ate and in solutions in the form of the enehydrazine tautomer in which the configurational equilibrium is determined by the nature of substituent in t he hydrazine moiety.