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

HRID 1182973Notes

Reaction equation

HRID 1182973 reaction equation
[Cl:1][C:2]1[C:7]([NH:8][C:9](=[O:18])[C:10]2[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=2[F:17])=[CH:6][C:5](B2OC(C)(C)C(C)(C)O2)=[CH:4][N:3]=1.Cl[C:29]1[CH:30]=[CH:31][C:32]2[N:33]=[CH:34][N:35]=[C:36]([O:39][CH:40]3[CH2:45][CH2:44][O:43][CH2:42][CH2:41]3)[C:37]=2[N:38]=1.C(=O)(O)[O-].[Na+]>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].C(Cl)Cl>[Cl:1][C:2]1[C:7]([NH:8][C:9](=[O:18])[C:10]2[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=2[F:17])=[CH:6][C:5]([C:29]2[CH:30]=[CH:31][C:32]3[N:33]=[CH:34][N:35]=[C:36]([O:39][CH:40]4[CH2:45][CH2:44][O:43][CH2:42][CH2:41]4)[C:37]=3[N:38]=2)=[CH:4][N:3]=1

Participants

6

Reactant 3

HCID 516892Sodium BicarbonateHCID 866710656-chloro-4-[(tetrahydro-2H-pyran-4-yl)oxy]-Pyrido[3,2-d]pyrimidine2×HCID 86671081HCID 86671081, compound2×

Product 1

HCID 66558299N-(2-chloro-5-(4-(tetrahydro-2H-pyran-4-yloxy)pyrido[3,2-d]pyrimidin-6-yl)pyridin-3-yl)-2,4-difluorobenzamideYield 16%

Reagents, catalysts & solvents 2

HCID 178418807HCID 178418807, compoundCatalystHCID 312751,4-DioxaneSolvent

Procedure

A mixture of N-(2-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)-2,4-difluorobenzamide (Intermediate 14) (0.100 g, 0.253 mmol), 6-chloro-4-(tetrahydro-2H-pyran-4-yloxy)pyrido[3,2-d]pyrimidine (Intermediate 1) (0.074 g, 0.279 mmol), 1N aq. sodium bicarbonate (0.043 g, 0.507 mmol) and PdCl2(dppf)-CH2Cl2 (0.021 g, 0.025 mmol) in dioxane (1.26 ml) was subjected to microwave irradiation for 1 hour at 110° C., and cooled to room temperature. The reaction mixture was filtered through a Celite pad and washed with DCM. The combined organic layers were washed brine, dried over anhydrous MgSO4, filtered and concentrated in vacuo. The residue was purified by column chromatography on SiO2 (Hex:EtOAc=1:1) to give N-(2-chloro-5-(4-(tetrahydro-2H-pyran-4-yloxy)pyrido[3,2-d]pyrimidin-6-yl)pyridin-3-yl)-2,4-difluorobenzamide (0.020 g, 16%) as a yellow solid. 1H-NMR (CDCl3, Varian 400 MHz) δ 2.05-2.13 (2H, m), 2.23-2.27 (2H, m), 3.70-3.76 (2H, m), 4.11-4.18 (2H, m), 5.65-5.71 (1H, m), 7.00-7.05 (1H, m), 7.10-7.15 (1H, m), 8.25-8.38 (3H, m), 8.84 (1H, s), 8.03 (1H, d, J=2.4 Hz), 9.19-9.24 (1H, m), 9.71 (1H, d, J=2.4 Hz). m/z=498.0 [M+1]+.

Workup

  1. customirradiation for 1 hour at 110° C.
  2. filtrationThe reaction mixture was filtered through a Celite pad
  3. washwashed with DCM
  4. washThe combined organic layers were washed brine
  5. dry with materialdried over anhydrous MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe residue was purified by column chromatography on SiO2 (Hex:EtOAc=1:1)

Sources & evidence

ORD record
ord-51583a3b9e4842bc9360e016683f8abe
Source dataset
uspto-grants-2014_03
Patent number
US08664230B2

Reaction notes

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