Hydrochloric Acid → 5-{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}-pyrazine-2-carboxylic acid

HRID 2386892Notes

Reaction equation

HRID 2386892 reaction equation
C[O:2][C:3]([C:5]1[CH:10]=[N:9][C:8]([O:11][C:12]2[CH:17]=[CH:16][C:15]([CH:18]([CH3:37])[C:19]([OH:36])([C:24]3[CH:25]=[CH:26][C:27]4[O:32][CH2:31][C:30](=[O:33])[N:29]([CH3:34])[C:28]=4[CH:35]=3)[C:20]([F:23])([F:22])[F:21])=[C:14]([Cl:38])[CH:13]=2)=[CH:7][N:6]=1)=[O:4].[OH-].[Na+].O.Cl>O1CCCC1>[Cl:38][C:14]1[CH:13]=[C:12]([CH:17]=[CH:16][C:15]=1[CH:18]([CH3:37])[C:19]([OH:36])([C:24]1[CH:25]=[CH:26][C:27]2[O:32][CH2:31][C:30](=[O:33])[N:29]([CH3:34])[C:28]=2[CH:35]=1)[C:20]([F:21])([F:22])[F:23])[O:11][C:8]1[N:9]=[CH:10][C:5]([C:3]([OH:4])=[O:2])=[N:6][CH:7]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 14798Sodium HydroxideHCID 666972115-{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}-pyrazine-2-carboxylic acid methyl ester

Product 1

HCID 666973215-{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}-pyrazine-2-carboxylic acid

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 5-{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}-pyrazine-2-carboxylic acid methyl ester (Example 227, 70 mg, 0.13 mmol) in tetrahydrofuran (0.5 ml) was added 1M aqueous NaOH solution (0.25 ml). The mixture was stirred 2 h at r.t. Water was added and the mixture was acidified using 1M aqueous HCl solution. The aqueous phase was extracted twice with AcOEt, dried (MgSO4) and concentrated. The solid residue was dried under high vacuum leading to the title compound (76 mg) as a white solid. MS (m/e, ISP neg. ion)=536.1 [M−H+].

Workup

  1. extractionThe aqueous phase was extracted twice with AcOEt
  2. dry with materialdried (MgSO4)
  3. concentrationconcentrated
  4. customThe solid residue was dried under high vacuum

Sources & evidence

ORD record
ord-0315a0c8acbf48249b5f719f03376967
Source dataset
uspto-grants-2012_09
Patent number
US08268820B2

Reaction notes

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