Preparation and application of 4-chlorine-3-ethyl-1-methyl-N'-(2-substituted phenoxy acetyl)-1H-pyrazol-5-carbohydrazide compounds
A technology of phenoxyacetylhydrazine and phenoxyacetyl, applied in 4-chloro-3-ethyl-1-methyl-N'-(2-substituted phenoxyacetyl)-1H-pyrazole- The preparation and application fields of 5-carbohydrazide compounds achieve the effects of convenient operation, improved purity and yield, and improved reaction efficiency
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Embodiment 1
[0036] 4-chloro-3-ethyl-1-methyl- N' -(2,4-Dichlorophenoxyacetyl)-1 H -Pyrazole-5-carbohydrazide (1): beige, yield: 81%, melting point: 161-163°C; 1 H NMR (CDCl 3 , 400MHz), : 1.27(t, J =4.0Hz,3H,CH 3 ), 2.59-2.70(m,2H,CH 2 ),4.09(s,3H,NCH 3 ),4.71(s,2H,COCH 2 O), 6.87-6.90 (m, 1H, Ar-H), 7.43-7.82 (m, 1H, Ar-H), 7.24 (m, 1H, Ar-H), 9.13 (s, 2H, CONH).
Embodiment 2
[0038] 4-chloro-3-ethyl-1-methyl- N' -(2,3-Dichlorophenoxyacetyl)-1 H -Pyrazole-5-carbohydrazide (2): white, yield: 88%, melting point: 238-240°C; 1 H NMR(CDCl 3 ,400MHz), :1.26(t,J=4.0Hz, 3H,CH 3 ),2.56-2.69(m,2H,CH 2 ), 4.10(s, 3H, NCH 3 ),4.73(s, 2H, COCH 2 O), 6.87-6.90(m, 1H, Ar-H), 7.40-7.81(m, 1H, Ar-H), 7.20(m, 1H, Ar-H), 9.13(s, 2H, CONH).
Embodiment 3
[0040] 4-chloro-3-ethyl-1-methyl- N' -(2-Chlorophenoxyacetyl)-1 H -Pyrazole-5-carbohydrazide (3): off-white, yield: 86%, melting point: 149-151 ? C; 1 H NMR (CDCl 3 , 400MHz), : 1.26(t, J =7.60Hz,3H,CH 3 ),2.64-2.69(m,2H,CH 2 ),4.16(s, 3H,NCH 3 ),4.74(s,2H,COCH 2 O), 6.95-7.00 (m, 1H, Ar-H), 7.01-7.05 (m, 1H, Ar-H), 7.27-7.31 (m, 1H, Ar-H), 7.43-7.45 (m, 1H, Ar-H), 9.12 (s, 1H, CONH), 9.23 (s, 1H, CONH).
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