30120-58-2Relevant articles and documents
Synthesis of aminopyrazoles from α- oxoketene O,N-acetals using Montmorillonite K-10/Ultrasound
Braibante, Mara E. F.,Braibante, Hugo T. S.,Da Roza, Juliano K.,Henriques, Danielle M.,De Carvalho Tavares, Luciana
, p. 1160 - 1162 (2003)
5(3)-Amino-3(5) phenylpyrazoles 3a-f have been conveniently prepared by condensation of α-oxoketene O,N-acetals 2a-g with hydrazine using montmorillonite K-10 as solid support under sonication.
Synthesis of N-alkylated derivatives of pyrazolo[1,5-a]-pyrimidine and their reaction with methylamine
Danagulyan,Panosyan,Boyakhchyan
, p. 581 - 585 (2007/10/03)
With the object of studying the factors influencing the course of enamine rearrangements, we have carried out the N-alkylation of alkyl- and aryl-substituted pyrazolo[1,5-a]pyrimidines. Using the NOEDIF NMR spectroscopic method for the cases of 5,7-dimeth
Reaction of Polarized Keten S,N-Acetals with Hydrazine: A Facile General Route to 3(5)-Substitutedamino-4,5(3)-substitutedpyrazoles
Vishwakarma, J. N.,Chowdhury, B. K. Roy,Ila, H.,Junjappa, H.
, p. 472 - 476 (2007/10/02)
A convenient general route for 3(5)-aryl-5(3)-N-aryl/alkyl/benzyl/amino-1(H)-pyrazoles (2a-r) and 3(5)-amino-5(3)-arylamino-4-cyano/aryl-pyrazoles (5a-c) has been developed involving the reaction of respective polarized keten S,N-acetals with hydrazine hy