biologically-active molecules. Methods: Up to now, a few examples have been reported for the synthesis of pyrazoles catalyzed by heterogeneous catalysts. In this work, a new boehmite silylpropyl amine sulfamic (m-SABNPs) was applied as a catalyst for one-pot synthesis of pyrazole derivatives. Results: It was found that this heterogeneous sulfamicacid is a highly efficient catalyst for the syntheses of
Facile one-pot synthesis of 5-amino-1H-pyrazole-4-carbonitriles using alumina–silica-supported MnO2 as recyclable catalyst in water
作者:Poonam、Ram Singh
DOI:10.1007/s11164-019-03847-8
日期:2019.9
A novel, facile, one-pot, multicomponent protocol for the synthesis of 5-amino-1H-pyrazole-4-carbonitrile derivatives has been developed using alumina–silica-supported MnO2 as recyclable catalyst in water and sodium dodecyl benzene sulphonate at room temperature. The cyclo-condensation of substituted benzaldehydes, malononitrile and phenyl hydrazine gave the 5-amino-1,3-diphenyl-1H-pyrazole-4-carbonitriles