Hydrogen Peroxide → 7-chloro-1-(5-fluoro-3-methyl-2-pyridin-2-ylquinolin-4-yl)-2,3-dihydro-1H-pyrido[2,3-b][1,4]thiazine 4,4-dioxide

HRID 1618676Notes

Reaction equation

HRID 1618676 reaction equation
[Cl:1][C:2]1[CH:29]=[N:28][C:5]2S[CH2:7][CH2:8][N:9]([C:10]3[C:19]4[C:14](=[CH:15][CH:16]=[CH:17][C:18]=4[F:20])[N:13]=[C:12]([C:21]4[CH:26]=[CH:25][CH:24]=[CH:23][N:22]=4)[C:11]=3[CH3:27])[C:4]=2[CH:3]=1.O.OO.[OH:33][S:34]([O-:36])=O.[Na+]>CCOC(C)=O.[O-][W]([O-])(=O)=O.[Na+].[Na+]>[Cl:1][C:2]1[CH:29]=[N:28][C:5]2[S:34](=[O:36])(=[O:33])[CH2:7][CH2:8][N:9]([C:10]3[C:19]4[C:14](=[CH:15][CH:16]=[CH:17][C:18]=4[F:20])[N:13]=[C:12]([C:21]4[CH:26]=[CH:25][CH:24]=[CH:23][N:22]=4)[C:11]=3[CH3:27])[C:4]=2[CH:3]=1

Participants

7

Reactant 4

HCID 784Hydrogen Peroxide2×HCID 962WaterHCID 23665763Sodium BisulfiteHCID 672850997-chloro-1-(5-fluoro-3-methyl-2-(pyridin-2-yl)quinolin-4-yl)-2,3-dihydro-1H-pyrido[2,3-b][1,4]thiazine

Product 1

HCID 672857777-chloro-1-(5-fluoro-3-methyl-2-pyridin-2-ylquinolin-4-yl)-2,3-dihydro-1H-pyrido[2,3-b][1,4]thiazine 4,4-dioxide

Reagents, catalysts & solvents 2

HCID 26052Sodium tungstateCatalyst2×HCID 8857Ethyl AcetateSolvent2×

Conditions

Temperature
0 °C

Procedure

To a stirred solution of 7-chloro-1-(5-fluoro-3-methyl-2-(pyridin-2-yl)quinolin-4-yl)-2,3-dihydro-1H-pyrido[2,3-b][1,4]thiazine (30 mg, 0.071 mmol) in EtOAc (2.5 mL) was added disodium tungstate (2.08 mg, 7.09 μmol) and water (0.2 mL). The reaction was cooled at 0° C. and then H2O2 (36.2 μL, 0.355 mmol, 30%) was added. The reaction was allowed to warm to rt for 1 h. After this time more disodium tungstate (5 mg) was added followed by H2O2 (0.3 mL) and the reaction was stirred at rt overnight. After this time the reaction was diluted with EtOAc (50 mL) and treated with a saturated aqueous solution of NaHSO3 (10 mL). The separated organic layer was washed with brine (10 mL), dried over MgSO4, filtered and evaporated in vacuo to give 7-chloro-1-(5-fluoro-3-methyl-2-pyridin-2-ylquinolin-4-yl)-2,3-dihydro-1H-pyrido[2,3-b][1,4]thiazine 4,4-dioxide. Mass Spectrum (ESI) m/e=455.0 (M+1).

Workup

  1. temperatureto warm to rt for 1 h
  2. washThe separated organic layer was washed with brine (10 mL)
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. customevaporated in vacuo

Sources & evidence

ORD record
ord-c71ece4857db4a829b48245908c087fa
Source dataset
uspto-grants-2014_07
Patent number
US08765940B2

Reaction notes

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