Methylhydrazine → 4-Bromo-n-[4-chloro-2-(n-methylhydrazinocarbonyl)-6-methylphenyl]-1-(3-chloro-2-pyridinyl)-1h-pyrrole-2-carboxamide

HRID 251965Notes

Reaction equation

HRID 251965 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.[CH3:27][NH: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]([N:28]([CH3:27])[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 6061MethylhydrazineHCID 8028TetrahydrofuranHCID 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 668537854-Bromo-n-[4-chloro-2-(n-methylhydrazinocarbonyl)-6-methylphenyl]-1-(3-chloro-2-pyridinyl)-1h-pyrrole-2-carboxamideYield 17.9%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 0.86 g of 2-[4-bromo-1-(3-chloro-2-pyridinyl)-1H-pyrrol-2-yl]-6-chloro-8-methyl-4H-3,1-benzoxazine-4-one, 0.11 g of methylhydrazine and 15 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. The organic layer was washed with water, dried over sodium sulfate, and concentrated under reduced pressure. The resulting residue was subjected to silica gel chromatography to obtain 0.17 g of 4-bromo-N-[4-chloro-2-(N-methylhydrazinocarbonyl)-6-methylphenyl]-1-(3-chloro-2-pyridinyl)-1H-pyrrole-2-carboxamide of the formula:

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with water
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-48ec2688bd5646f69ade43194c88c3b8
Source dataset
uspto-grants-2011_01
Patent number
US07867949B2

Reaction notes

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