Sodium Bicarbonate → N-(2-chloro-5-(4-(tetrahydro-2H-pyran-4-ylamino)pyrido[3,2-d]pyrimidin-6-yl)pyridin-3-yl)-2,4-difluorobenzenesulfonamide

HRID 1182975Notes

Reaction equation

HRID 1182975 reaction equation
Cl[C:2]1[CH:3]=[CH:4][C:5]2[N:6]=[CH:7][N:8]=[C:9]([NH:12][CH:13]3[CH2:18][CH2:17][O:16][CH2:15][CH2:14]3)[C:10]=2[N:11]=1.[Cl:19][C:20]1[C:25]([NH:26][S:27]([C:30]2[CH:35]=[CH:34][C:33]([F:36])=[CH:32][C:31]=2[F:37])(=[O:29])=[O:28])=[CH:24][C:23](B2OC(C)(C)C(C)(C)O2)=[CH:22][N:21]=1.C(=O)(O)[O-].[Na+]>O1CCOCC1>[Cl:19][C:20]1[C:25]([NH:26][S:27]([C:30]2[CH:35]=[CH:34][C:33]([F:36])=[CH:32][C:31]=2[F:37])(=[O:29])=[O:28])=[CH:24][C:23]([C:2]2[CH:3]=[CH:4][C:5]3[N:6]=[CH:7][N:8]=[C:9]([NH:12][CH:13]4[CH2:18][CH2:17][O:16][CH2:15][CH2:14]4)[C:10]=3[N:11]=2)=[CH:22][N:21]=1

Participants

5

Reactant 3

HCID 516892Sodium BicarbonateHCID 866710726-chloro-N-(tetrahydro-2H-pyran-4-yl)-Pyrido[3,2-d]pyrimidin-4-amine2×HCID 86671080N-(2-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)-2,4-difluorobenzenesulfonamide2×

Product 1

HCID 66558383N-(2-chloro-5-(4-(tetrahydro-2H-pyran-4-ylamino)pyrido[3,2-d]pyrimidin-6-yl)pyridin-3-yl)-2,4-difluorobenzenesulfonamideYield 29%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A mixture of 6-chloro-N-(tetrahydro-2H-pyran-4-yl)pyrido[3,2-d]pyrimidin-4-amine (0.026 g, 0.098 mmol) (Intermediate 17), N-(2-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3-yl)-2,4-difluorobenzenesulfonamide (Intermediate 3) (0.051 g, 0.118 mmol), PdCl2(dppf)-CH2Cl2Adduct (0.802 mg, 0.982 μmol) and sodium bicarbonate (0.196 ml, 0.196 mmol) in dioxane (0.491 ml) was refluxed for 3 hours. After cooling to room temperature, the reaction mixture was filtered through Celite and washed with CH2Cl2. The filtrate was concentrated in vacuo. The residue was purified by column chromatography on SiO2 (only EtOAc) to give N-(2-chloro-5-(4-(tetrahydro-2H-pyran-4-ylamino)pyrido[3,2-d]pyrimidin-6-yl)pyridin-3-yl)-2,4-difluorobenzenesulfonamide (0.015 g, 29%) as a white solid. 1H-NMR (CDCl3, Varian 400 MHz) δ 1.68-1.83 (2H, m), 2.13-2.20 (2H, m), 3.58-3.65 (2H, m), 4.05-4.12 (2H, m), 4.41-4.50 (1H, m), 6.94-7.02 (2H, m), 7.18 (1H, d, J=8.0 Hz), 7.84-7.90 (1H, m), 8.09 (1H, d, J=8.8 Hz), 8.24 (1H, d, J=8.4 Hz), 8.65 (1H, s), 8.74 (1H, d, J=2.0 Hz), 8.84 (1H, d, J=2.4 Hz). NH peak was not observed. m/z=533.4 [M+1]+.

Workup

  1. temperaturewas refluxed for 3 hours
  2. filtrationthe reaction mixture was filtered through Celite
  3. washwashed with CH2Cl2
  4. concentrationThe filtrate was concentrated in vacuo
  5. customThe residue was purified by column chromatography on SiO2 (only EtOAc)

Sources & evidence

ORD record
ord-3993dcd564a74d12b52aa420aaa668d9
Source dataset
uspto-grants-2014_03
Patent number
US08664230B2

Reaction notes

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