摘要
A new class of pyrazolone derivatives has been isolated in good to excellent yields from the 2 ： 1 condensation reaction between 3-methyl-1-phenyl-5-pyrazolone and arylaldehydes in the presence of ionic liquid [HMIM]HSO4. The compounds were characterised by their IR, NMR spectra, MS and elemental analyses. The important features of the methodology are a wide application range of substrates, higher yields and shorter reaction time.
A new class of pyrazolone derivatives has been isolated in good to excellent yields from the 2 ： 1 condensation reaction between 3-methyl-1-phenyl-5-pyrazolone and arylaldehydes in the presence of ionic liquid [HMIM]HSO4. The compounds were characterised by their IR, NMR spectra, MS and elemental analyses. The important features of the methodology are a wide application range of substrates, higher yields and shorter reaction time.
基金
Project supported by the National Natural Science Foundation of China （No. 51076174） and the Tianjin National Natural Science Foundation （No. 11JCZDJC21300）.
