Sodium Bicarbonate → N-(2-chloro-5-(4-(1-methylpiperidin-4-yloxy)pyrido[3,2-d]pyrimidin-6-yl)pyridin-3-yl)-2,4-difluorobenzene-sulfonamide

HRID 1485548Notes

Reaction equation

HRID 1485548 reaction equation
Cl[C:2]1[CH:3]=[CH:4][C:5]2[N:6]=[CH:7][N:8]=[C:9]([O:12][CH:13]3[CH2:18][CH2:17][N:16]([CH3:19])[CH2:15][CH2:14]3)[C:10]=2[N:11]=1.[Cl:20][C:21]1[C:26]([NH:27][S:28]([C:31]2[CH:36]=[CH:35][C:34]([F:37])=[CH:33][C:32]=2[F:38])(=[O:30])=[O:29])=[CH:25][C:24](B2OC(C)(C)C(C)(C)O2)=[CH:23][N:22]=1.C(=O)(O)[O-].[Na+]>O1CCOCC1>[Cl:20][C:21]1[C:26]([NH:27][S:28]([C:31]2[CH:36]=[CH:35][C:34]([F:37])=[CH:33][C:32]=2[F:38])(=[O:30])=[O:29])=[CH:25][C:24]([C:2]2[CH:3]=[CH:4][C:5]3[N:6]=[CH:7][N:8]=[C:9]([O:12][CH:13]4[CH2:18][CH2:17][N:16]([CH3:19])[CH2:15][CH2:14]4)[C:10]=3[N:11]=2)=[CH:23][N:22]=1

Participants

5

Reactant 3

HCID 516892Sodium BicarbonateHCID 866710666-chloro-4-[(1-methyl-4-piperidinyl)oxy]-Pyrido[3,2-d]pyrimidine2×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 66558033N-(2-chloro-5-(4-(1-methylpiperidin-4-yloxy)pyrido[3,2-d]pyrimidin-6-yl)pyridin-3-yl)-2,4-difluorobenzene-sulfonamideYield 34%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A mixture of 6-chloro-4-(1-methylpiperidin-4-yloxy)pyrido[3,2-d]pyrimidine (Intermediate 6) (0.03 g, 0.108 mmol), N-(2-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)-2,4-difluorobenzenesulfonamide (Intermediate 3) (0.046 g, 0.108 mmol), PdCl2(dppf)-CH2Cl2Adduct (8.79 mg, 10.76 μmol) and sodium bicarbonate (0.215 ml, 0.215 mmol) in dioxane (0.538 ml) was refluxed for 3 hours. After cooling to room temperature, the reaction mixture was filtered through a Celite pad and washed with CH2Cl2. The filtrate was concentrated in vacuo. The residue was purified by prep TLC (EtOAc:MeOH=10:1) to give N-(2-chloro-5-(4-(1-methylpiperidin-4-yloxy)pyrido[3,2-d]pyrimidin-6-yl)pyridin-3-yl)-2,4-difluorobenzene-sulfonamide (0.02 g, 34%) as a yellow solid. 1H-NMR (CDCl3, Varian 400 MHz) δ 2.10-2.22 (2H, m), 2.37 (2H, s), 2.62 (3H, s), 2.88-2.95 (2H, m), 3.13-3.17 (2H, m), 5.64 (1H, brs), 6.86-6.94 (2H, m), 7.86-7.92 (1H, m), 8.21 (1H, d, J=9.2 Hz), 8.34 (1H, d, J=8.8 Hz), 8.79 (1H, d, J=2.0 Hz), 8.82 (1H, s), 8.91 (1H, brs). m/z=547.4 [M+1]+.

Workup

  1. temperaturewas refluxed for 3 hours
  2. filtrationthe reaction mixture was filtered through a Celite pad
  3. washwashed with CH2Cl2
  4. concentrationThe filtrate was concentrated in vacuo
  5. customThe residue was purified by prep TLC (EtOAc:MeOH=10:1)

Sources & evidence

ORD record
ord-1152176567ed4210b509a81405f9d79b
Source dataset
uspto-grants-2016_08
Patent number
US09422298B2

Reaction notes

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