Chemistry of Heterocyclic Compounds p. 863 - 867 (1983)
Update date:2022-08-02
Topics:
Zhestkov, V.P.
Voronin, V.G.
Portnov, Yu.N.
1-Aryl-3-(2,4-dimethyl-5-ethoxycarbonyl-3-pyrrolyl)-5-oxopyrazoles were obtained by condensation of ethyl β-(2,4-dimethyl-5-ethoxycarbonyl-3-pyrrolyl)-β-ketopropionate with arylhydrazines.Electron-donor substituents in the aromatic ring of the arylhydrazines accelerate the cyclization of the intermediate hydrazones, whereas electron-acceptor substituents hinder cyclization.
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Doi:10.1021/om050882g
(2006)Doi:10.1016/S0022-328X(00)89433-4
(1977)Doi:10.1039/P19830002011
(1983)Doi:10.1039/c8ra02557f
(2018)Doi:10.1021/jo026001m
(2002)Doi:10.1016/j.ica.2005.04.040
(2006)
