N,N-Diacetyl-O-methylhydroxylamine → HCID 74020018, compound

HRID 661723Notes

Reaction equation

HRID 661723 reaction equation
[NH2:1][CH2:2][CH2:3][O:4][N:5]=[CH:6][C:7]1[C:8]([F:30])=[C:9]([F:29])[C:10]([NH:20][C:21]2[CH:26]=[CH:25][C:24]([I:27])=[CH:23][C:22]=2[F:28])=[C:11]([CH:19]=1)[C:12]([NH:14][O:15][CH2:16][CH2:17][OH:18])=[O:13].CON(C(C)=O)[C:34](=[O:36])[CH3:35]>CN(C)C=O.CO>[C:34]([NH:1][CH2:2][CH2:3][O:4][N:5]=[CH:6][C:7]1[C:8]([F:30])=[C:9]([F:29])[C:10]([NH:20][C:21]2[CH:26]=[CH:25][C:24]([I:27])=[CH:23][C:22]=2[F:28])=[C:11]([CH:19]=1)[C:12]([NH:14][O:15][CH2:16][CH2:17][OH:18])=[O:13])(=[O:36])[CH3:35]

Participants

5

Reactant 2

HCID 538412N,N-Diacetyl-O-methylhydroxylamineHCID 72794471HCID 72794471, compound

Product 1

HCID 74020018HCID 74020018, compoundYield 92%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of 5-[(2-amino-ethoxyimino)-methyl]-3,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-N-(2-hydroxy-ethoxy)-benzamide (8.14 mg, 0.02 mmol) described in Example 22 in a mixture of dimethylformamide (1 ml) and methanol (5 ml), N-methoxy-diacetamide (100 mg, 0.76 mmol) was added, and the mixture was stirred at room temperature for 14 hours. After completion of the reaction, the solvent was distilled off under reduced pressure, and the resulting residue was purified with Mega Bond Elut silica gel (5 g, Varian, Inc.). From the fractions eluted with 6% methanol/methylene chloride, 5-[(2-acetylamino-ethoxyimino)-methyl]-3,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-N-(2-hydroxy-ethoxy)-benzamide (8.10 mg, 92% yield) was obtained as a pale yellow solid.

Workup

  1. additionwas added
  2. customAfter completion of the reaction
  3. distillationthe solvent was distilled off under reduced pressure
  4. customthe resulting residue was purified with Mega Bond Elut silica gel (5 g, Varian, Inc.)
  5. washFrom the fractions eluted with 6% methanol/methylene chloride

Sources & evidence

ORD record
ord-d87d60022c124b60b620cc8f85240824
Source dataset
uspto-grants-2011_12
Patent number
US08084645B2

Reaction notes

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