Tetrahydrofuran → N-[4-chloro-2-(hydrazinocarbonyl)-6-methylphenyl]-1-(2-chlorophenyl)-3-trifluoromethyl-1H-pyrazole-5-carboxamide

HRID 251900Notes

Reaction equation

HRID 251900 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH3:29])[C:5]2[N:10]=[C:9]([C:11]3[N:15]([C:16]4[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=4[Cl:22])[N:14]=[C:13]([C:23]([F:26])([F:25])[F:24])[CH:12]=3)[O:8][C:7](=[O:27])[C:6]=2[CH:28]=1.O.[NH2:31][NH2:32].O1CCCC1>O>[Cl:1][C:2]1[CH:3]=[C:4]([CH3:29])[C:5]([NH:10][C:9]([C:11]2[N:15]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[Cl:22])[N:14]=[C:13]([C:23]([F:26])([F:24])[F:25])[CH:12]=2)=[O:8])=[C:6]([C:7]([NH:31][NH2:32])=[O:27])[CH:28]=1

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 24654Hydrazine hydrate (1:1)HCID 668545686-chloro-2-[1-(2-chlorophenyl)-3-trifluoromethyl-1H-pyrazol-5-yl]-8-methyl-4H-3,1-benzoxazine-4-one

Product 1

HCID 66854239N-[4-chloro-2-(hydrazinocarbonyl)-6-methylphenyl]-1-(2-chlorophenyl)-3-trifluoromethyl-1H-pyrazole-5-carboxamide

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 0.88 g of 6-chloro-2-[1-(2-chlorophenyl)-3-trifluoromethyl-1H-pyrazol-5-yl]-8-methyl-4H-3,1-benzoxazine-4-one, 0.19 ml of hydrazine monohydrate and 3 ml of tetrahydrofuran was stirred at room temperature for 2 hours. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate three times. The organic layers were combined, washed with an aqueous saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure to obtain 0.94 g of N-[4-chloro-2-(hydrazinocarbonyl)-6-methylphenyl]-1-(2-chlorophenyl)-3-trifluoromethyl-1H-pyrazole-5-carboxamide of the formula:

Workup

  1. extractionthe mixture was extracted with ethyl acetate three times
  2. washwashed with an aqueous saturated sodium chloride solution
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-78699f68b6a54649855908490c8b919f
Source dataset
uspto-grants-2011_01
Patent number
US07867949B2

Reaction notes

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