Potassium Carbonate → 6-{3-Chloro-4-[3,3,3-trifluoro-2-hydroxy-1-methyl-2-(4-methyl-3-oxo-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-propyl]-phenoxy}-nicotinic acid methyl ester

HRID 2096890Notes

Reaction equation

HRID 2096890 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([OH:8])[CH:5]=[CH:4][C:3]=1[CH:9]([CH3:28])[C:10]([C:16]1[CH:17]=[CH:18][C:19]2[O:24][CH2:23][C:22](=[O:25])[N:21]([CH3:26])[C:20]=2[CH:27]=1)([OH:15])[C:11]([F:14])([F:13])[F:12].Cl[C:30]1[N:35]=[CH:34][C:33]([C:36]([O:38][CH3:39])=[O:37])=[CH:32][CH:31]=1.C(=O)([O-])[O-].[K+].[K+]>O>[CH3:39][O:38][C:36](=[O:37])[C:33]1[CH:32]=[CH:31][C:30]([O:8][C:6]2[CH:5]=[CH:4][C:3]([CH:9]([CH3:28])[C:10]([OH:15])([C:16]3[CH:17]=[CH:18][C:19]4[O:24][CH2:23][C:22](=[O:25])[N:21]([CH3:26])[C:20]=4[CH:27]=3)[C:11]([F:12])([F:13])[F:14])=[C:2]([Cl:1])[CH:7]=2)=[N:35][CH:34]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 254249Methyl 6-chloropyridine-3-carboxylateHCID 666972396-[(2-chloro-4-hydroxy-phenyl)-1-hydroxy-1-trifluoromethyl-propyl]-4-methyl-4H-benzo[1,4]oxazin-3-one

Product 1

HCID 666972096-{3-Chloro-4-[3,3,3-trifluoro-2-hydroxy-1-methyl-2-(4-methyl-3-oxo-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-propyl]-phenoxy}-nicotinic acid methyl esterYield 9.1%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
110 °C

Procedure

To a solution of 6-[2-(2-chloro-4-hydroxy-phenyl)-1-hydroxy-1-trifluoromethyl-propyl]-4-methyl-4H-benzo[1,4]oxazin-3-one (200 mg, 0.48 mmol, Example 56, step 4) in N′N-dimethylformamide (2.0 ml) were added methyl 6-chloropyridine-3-carboxylate (93 mg, 0.53 mmol) and potassium carbonate (199 mg, 1.44 mmol). The mixture was stirred for 4 h at 110° C. After cooling to r.t. water was added and the mixture was extracted twice with AcOEt. The organic phases were washed with water and brine, dried (MgSO4) and concentrated. The product was purified by column chromatography (silica gel, heptane/AcOEt 4:1) to give the title compound (24 mg) as light yellow solid. MS (m/e)=551.2 [M+H+]

Workup

  1. additionwas added
  2. extractionthe mixture was extracted twice with AcOEt
  3. washThe organic phases were washed with water and brine
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated
  6. customThe product was purified by column chromatography (silica gel, heptane/AcOEt 4:1)

Sources & evidence

ORD record
ord-8f5364ea511c4a53b768c2a037d1b3ef
Source dataset
uspto-grants-2013_05
Patent number
US08450313B2

Reaction notes

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