作者:Okram Mukherjee Singh、Mohammad Farooque Ahmed、Sarangthem Joychandra Singh、Sang-Gyeong Lee
DOI:10.3184/030823407x209723
日期:2007.4
An efficient and convenient synthesis of substituted pyrazoles with aryl and heteroarylamino substituents attached to the C-3 and C-5 positions by the action of hydrazine hydrate on either ketene N,S-acetals or mixed N,N-aminals hydrate is reported.
Singh, Okram Mukherjee; Junjappa, Hiriyakkanavar; Ila, Hiriyakkanavar, Journal of the Chemical Society. Perkin transactions I, 1997, # 23, p. 3561 - 3565
A Facile Access to 2-Methylthio/Alkoxy/Amino-3-acylimidazo[1,2-<i>a</i>]pyridines Based on Cupric Chloride Promoted Oxidative Ring Closure of α-Oxoketene N,S-, N,O-, and N,N-Acetals