Potassium hydroxy sulfite → N-{[2-(1,1-dioxido-2,3-dihydro-4H-1,4-benzothiazin-4-yl)pyridine-3-yl]methyl}-N-pyridin-3-ylpyridin-3-amine

HRID 563949Notes

Reaction equation

HRID 563949 reaction equation
S1[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=2[N:4]([C:11]2[C:16]([CH2:17][N:18]([C:25]3[CH:26]=[N:27][CH:28]=[CH:29][CH:30]=3)[C:19]3[CH:20]=[N:21][CH:22]=[CH:23][CH:24]=3)=[CH:15][CH:14]=[CH:13][N:12]=2)[CH2:3][CH2:2]1.O[O:32][S:33]([O-:35])=O.[K+]>CO.O.C([O-])([O-])=O.[Na+].[Na+]>[O:32]=[S:33]1(=[O:35])[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=2[N:4]([C:11]2[C:16]([CH2:17][N:18]([C:25]3[CH:26]=[N:27][CH:28]=[CH:29][CH:30]=3)[C:19]3[CH:20]=[N:21][CH:22]=[CH:23][CH:24]=3)=[CH:15][CH:14]=[CH:13][N:12]=2)[CH2:3][CH2:2]1

Participants

6

Reactant 2

HCID 23707502Potassium hydroxy sulfiteHCID 24877535N-{[2-(2,3-dihydro-4H-1,4-benzothiazin-4-yl)pyridine-3-yl]methyl}-N-pyridin-3-ylpyridin-3-amine

Product 1

HCID 24877648N-{[2-(1,1-dioxido-2,3-dihydro-4H-1,4-benzothiazin-4-yl)pyridine-3-yl]methyl}-N-pyridin-3-ylpyridin-3-amine

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolvent2×HCID 10340Sodium CarbonateSolvent

Procedure

To a solution of: N-{[2-(2,3-dihydro-4H-1,4-benzothiazin-4-yl)pyridine-3-yl]methyl}-N-pyridin-3-ylpyridin-3-amine (52 mg, 0.126 mmol) in methanol (1.5 mL) and water (1 mL) was added Oxone™ (97 mg, 0.157 mmol). The reaction progress was monitored by LC/MS and after 2 hours the reaction was diluted with water and Na2CO3 solution and the product was extracted into ethyl acetate, the solution dried, filtered, and the solvent evaporated. The residue was purified by chromatography on silica gel eluting with a 20-100% acetone/hexane gradient to give the title compound as a coloress glass. 1H-NMR (500 MHz, CDCl3): δ 8.51 (1H, d, J=3.6 Hz), 8.29 (2H, s), 8.26 (2H, d, J=3.9 Hz), 7.88 (2H, t, J=9.0 Hz), 7.26-7.31 (4H, m), 7.18-7.21 (2H, m), 7.00 (1H, t, J=7.3 Hz), 6.22 (1H, d, J=8.3 Hz), 4.76 (2H, s), 4.38 (2H, br s), 3.57 (2H, t, J=5.8 Hz). m/e (m+1): 444.2.

Workup

  1. extractionthe product was extracted into ethyl acetate
  2. customthe solution dried
  3. filtrationfiltered
  4. customthe solvent evaporated
  5. customThe residue was purified by chromatography on silica gel eluting with a 20-100% acetone/hexane gradient

Sources & evidence

ORD record
ord-6cb4f6fe60674e18911b1b150908b9e7
Source dataset
uspto-grants-2011_11
Patent number
US08067607B2

Reaction notes

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