O-Methylhydroxylamine → 3-{2-Chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-[(methoxyaminocarbonyl)methoxy]pyridine

HRID 1241276Notes

Reaction equation

HRID 1241276 reaction equation
Cl.CN(C)CCCN=C=NCC.[Cl:13][C:14]1[CH:31]=[C:30]([F:32])[C:29]([N:33]2[C:38](=[O:39])[CH:37]=[C:36]([C:40]([F:43])([F:42])[F:41])[N:35]([CH3:44])[C:34]2=[O:45])=[CH:28][C:15]=1[O:16][C:17]1[C:18]([O:23][CH2:24][C:25](O)=[O:26])=[N:19][CH:20]=[CH:21][CH:22]=1.[CH3:46][O:47][NH2:48].C(N(CC)CC)C>O.CN(C)C=O>[CH3:46][O:47][NH:48][C:25](=[O:26])[CH2:24][O:23][C:18]1[C:17]([O:16][C:15]2[CH:28]=[C:29]([N:33]3[C:38](=[O:39])[CH:37]=[C:36]([C:40]([F:41])([F:43])[F:42])[N:35]([CH3:44])[C:34]3=[O:45])[C:30]([F:32])=[CH:31][C:14]=2[Cl:13])=[CH:22][CH:21]=[CH:20][N:19]=1

Participants

7

Reactant 4

HCID 4113O-MethylhydroxylamineHCID 8471TriethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 219335233-{2-Chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-carboxymethoxypyridine

Product 1

HCID 219335663-{2-Chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-[(methoxyaminocarbonyl)methoxy]pyridineYield 28.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

First, 0.13 g of 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride was added to a mixture of 0.30 g of [3-{2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-pyridyloxy]acetic acid (compound a-2), 56 mg of o-methylhydroxylamine, 68 mg of triethylamine, and 2 ml of N,N-dimethylformamide at room temperature, and the mixture was stirred for 2 hours. The mixture was poured into water, and the mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate and then concentrated. The residue was subjected to silica gel column chromatography to give 90 mg of N-methoxy-[3-{2-chloro-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-pyridyloxy]acetamide (compound a-104).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-638a96f1716f429da5caf6035662b610
Source dataset
uspto-grants-2006_10
Patent number
US07115544B2

Reaction notes

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