Acetonitrile → 7-(3-Chloropyridin-2-yl)-N-(4-(difluoromethoxy)phenyl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-amine

HRID 971214Notes

Reaction equation

HRID 971214 reaction equation
Cl[C:2]1[C:3]2[CH2:11][CH2:10][N:9]([C:12]3[C:17]([Cl:18])=[CH:16][CH:15]=[CH:14][N:13]=3)[CH2:8][C:4]=2[N:5]=[CH:6][N:7]=1.[F:19][CH:20]([F:29])[O:21][C:22]1[CH:28]=[CH:27][C:25]([NH2:26])=[CH:24][CH:23]=1.C(#N)C.C(=O)(O)[O-].[Na+]>>[Cl:18][C:17]1[C:12]([N:9]2[CH2:10][CH2:11][C:3]3[C:2]([NH:26][C:25]4[CH:27]=[CH:28][C:22]([O:21][CH:20]([F:19])[F:29])=[CH:23][CH:24]=4)=[N:7][CH:6]=[N:5][C:4]=3[CH2:8]2)=[N:13][CH:14]=[CH:15][CH:16]=1

Participants

5

Reactant 4

HCID 6342AcetonitrileHCID 516892Sodium BicarbonateHCID 7373634-(Difluoromethoxy)anilineHCID 590214784-Chloro-7-(3-chloropyridin-2-yl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine

Product 1

HCID 120043417-(3-Chloropyridin-2-yl)-N-(4-(difluoromethoxy)phenyl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-amineYield 76.5%

Conditions

Temperature
160 °C

Procedure

A mixture of 4-chloro-7-(3-chloropyridin-2-yl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine (0.103 g, 0.000366 mol) and 4-(difluoromethoxy)aniline (0.091 mL, 0.00073 mol) in acetonitrile (3 mL, 0.06 mol) was heated via microwave in a sealed tube at 160° C. for 10 minutes. After cooling to room temperature, the mixture was added to saturated sodium bicarbonate and extracted with ethyl acetate. The organic layer was washed with brine and dried over sodium sulfate. Concentrated to leave an oil. The residue was purified by flash chromatography over silica gel (ethyl acetate/hexane gradient 0 to 100%) to give 0.113 g of a light yellow solid.

Workup

  1. temperatureAfter cooling to room temperature
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over sodium sulfate
  5. concentrationConcentrated
  6. customto leave an oil
  7. customThe residue was purified by flash chromatography over silica gel (ethyl acetate/hexane gradient 0 to 100%)

Sources & evidence

ORD record
ord-fd013e20c8e6410f9d7f91052d216540
Source dataset
uspto-grants-2007_12
Patent number
US07312330B2

Reaction notes

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