POLYMER SUPPORTED ACIDIC IONIC LIQUID AS A HETEROGENEOUS CATALYST FOR THE SYNTHESIS OF 4, 4'-(ARYLMETHYLENE)BIS(3-METHYL-1-PHENYL-1H-PYRAZOL-5-OLS)

A poly(4-vinylpyridine)-supported Bronsted acidic ionic liquid was easily prepared from its starting materials and used as a novel, highly efficient, and reusable heterogeneous catalytic system for the synthesis of 4,4'-(arylmethylene)bis(3-methyl-1-phenyl-1H-pyrazol-5-ols) from the condensation reaction between aromatic aldehydes and 2 equivalents of 3-methyl-l-phenyl-5-pyrazolon

کلیدواژه ها:

3-Methyl-l-phenyl-5-pyrazolone ، Aldehydes ، Ionic liquids ، One-pot synthesis ، Heterogeneous catalysis