Keywords: 4-nitrophenylhydrazine, 4-benzylidene-3-methyl-1 - (4-nitrophenyl) - 1H-pyrazol-5 (H) - one, 4-benzyl-3-methyl-1 - (4-nitrophenyl) - 1H-pyrazol-5-ol, Knoevenagel condensation
Từ khoá: 4 - nitrophenylhydrazin, 4 - benzyliden-3 - methyl-1 - (4 - nitrophenyl) -1 H-pyrazol -5 (4 H) - on, 4 - benzyl-3 - methyl-1 - (4 - nitrophenyl) -1 H-pyrazol -5 - ol, ngưng tụ Knoevenagel