Water → 5-Bromo-1-methyl-3-(5-(4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)pyridin-2(1H)-one

HRID 1919001Notes

Reaction equation

HRID 1919001 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([NH:10][C:11]2[CH:16]=[CH:15][C:14]([N:17]3[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]3)=[CH:13][N:12]=2)[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=1.[O:23]1[CH2:26][C:25](=O)[CH2:24]1.[BH3-]C#N.[Na+].O>CO.[Cl-].[Zn+2].[Cl-]>[Br:1][C:2]1[CH:3]=[C:4]([NH:10][C:11]2[CH:16]=[CH:15][C:14]([N:17]3[CH2:22][CH2:21][N:20]([CH:25]4[CH2:26][O:23][CH2:24]4)[CH2:19][CH2:18]3)=[CH:13][N:12]=2)[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=1

Participants

7

Reactant 4

HCID 962WaterHCID 5003444Sodium cyanoborohydrideHCID 150242543-OxetanoneHCID 580436655-Bromo-1-methyl-3-((5-(piperazin-1-yl)-pyridin-2-yl)amino)pyridin-2(1H)-one

Product 1

HCID 580437945-Bromo-1-methyl-3-(5-(4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)pyridin-2(1H)-oneYield 61%

Reagents, catalysts & solvents 2

HCID 3007855ZincchlorideCatalystHCID 887MethanolSolvent

Procedure

A mixture of 210b (2.75 g, 7.5 mmol), oxetan-3-one (1.6 g, 22.7 mmol), NaBH3CN (4.75 g, 22.5 mmol) and zinc chloride (3 g, 22.7 mmol) in methanol (125 mL) was stirred for 5 hours at 50 degree. The mixture was added to water and extracted with methylene chloride three times. The organic layers were concentrated under reduced pressure. The residue was purified by column-chromatography eluting with methylene chloride:methanol=25:1 to give 210c (1.92 g, 61%). MS: [M+H]+ 420. 1H NMR (500 MHz, DMSO) δ 8.58 (d, J=2.5, 1H), 8.55 (s, 1H), 7.94 (d, J=3, 1H), 7.54 (d, J=2.5, 1H), 7.39 (dd, J=3, 1H), 7.25 (d, J=4, 1H), 4.56 (t, J=6.5, 2H), 4.46 (t, J=6.5, 2H), 3.50 (s, 3H), 3.43 (m, 1H), 3.01 (m, 4H), 2.40 (m, 4H).

Workup

  1. extractionextracted with methylene chloride three times
  2. concentrationThe organic layers were concentrated under reduced pressure
  3. customThe residue was purified by column-chromatography
  4. washeluting with methylene chloride

Sources & evidence

ORD record
ord-7e100596481e47339321593143317ad5
Source dataset
uspto-grants-2013_12
Patent number
US08618107B2

Reaction notes

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