Tetrahydrofuran → 4-bromo-N-[4-chloro-2-(hydrazinocarbonyl)-6-methylphenyl]-1-(3-chloro-2-pyridinyl)-1H-pyrrole-2-carboxamide

HRID 2427053Notes

Reaction equation

HRID 2427053 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([C:14]2[O:19][C:18](=[O:20])[C:17]3[CH:21]=[C:22]([Cl:26])[CH:23]=[C:24]([CH3:25])[C:16]=3[N:15]=2)[N:5]([C:7]2[C:12]([Cl:13])=[CH:11][CH:10]=[CH:9][N:8]=2)[CH:6]=1.O.[NH2:28][NH2:29].O1CCCC1>O>[Br:1][C:2]1[CH:3]=[C:4]([C:14]([NH:15][C:16]2[C:24]([CH3:25])=[CH:23][C:22]([Cl:26])=[CH:21][C:17]=2[C:18]([NH:28][NH2:29])=[O:20])=[O:19])[N:5]([C:7]2[C:12]([Cl:13])=[CH:11][CH:10]=[CH:9][N:8]=2)[CH:6]=1

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 24654Hydrazine hydrate (1:1)HCID 668538312-[4-bromo-1-(3-chloro-2-pyridinyl)-1H-pyrrol-2-yl]-6-chloro-8-methyl-4H-3,1-benzoxazine-4-one

Product 1

HCID 668544124-bromo-N-[4-chloro-2-(hydrazinocarbonyl)-6-methylphenyl]-1-(3-chloro-2-pyridinyl)-1H-pyrrole-2-carboxamideYield 96.6%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 0.29 g of 2-[4-bromo-1-(3-chloro-2-pyridinyl)-1H-pyrrol-2-yl]-6-chloro-8-methyl-4H-3,1-benzoxazine-4-one, 0.10 g of hydrazine monohydrate and 10 ml of tetrahydrofuran was stirred at room temperature for 2 hours. Water was added to 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 0.30 g of 4-bromo-N-[4-chloro-2-(hydrazinocarbonyl)-6-methylphenyl]-1-(3-chloro-2-pyridinyl)-1H-pyrrole-2-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-7d56faf3260645fca4a6a64e9b660db1
Source dataset
uspto-grants-2011_06
Patent number
US07968573B2

Reaction notes

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