Triethylamine → (8S)-9-[2-(4-methylpyrid-3-yl)-2-oxoethyl]-2-(1S,4S)-2-oxa-5-azabicyclo[2.2.1]hept-5-yl-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one

HRID 633721Notes

Reaction equation

HRID 633721 reaction equation
Cl[C:2]1[N:3]=[C:4]2[N:12]([CH2:13][C:14]([C:16]3[CH:17]=[N:18][CH:19]=[CH:20][C:21]=3[CH3:22])=[O:15])[C@H:11]([C:23]([F:26])([F:25])[F:24])[CH2:10][CH2:9][N:5]2[C:6](=[O:8])[CH:7]=1.Cl.[C@H:28]12[CH2:34][C@H:31]([NH:32][CH2:33]1)[CH2:30][O:29]2.C(N(CC)CC)C>O>[CH3:22][C:21]1[CH:20]=[CH:19][N:18]=[CH:17][C:16]=1[C:14](=[O:15])[CH2:13][N:12]1[C:4]2=[N:3][C:2]([N:32]3[CH2:33][C@@H:28]4[CH2:34][C@H:31]3[CH2:30][O:29]4)=[CH:7][C:6](=[O:8])[N:5]2[CH2:9][CH2:10][C@H:11]1[C:23]([F:26])([F:25])[F:24]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 21303398(1S,4S)-2-oxa-5-azabicyclo(2.2.1)heptane hydrochlorideHCID 118194296(8S)-2-chloro-9-[2-(4-methylpyrid-3-yl)-2-oxoethyl]-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one

Product 1

HCID 72709788(8S)-9-[2-(4-methylpyrid-3-yl)-2-oxoethyl]-2-(1S,4S)-2-oxa-5-azabicyclo[2.2.1]hept-5-yl-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-oneYield 74.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
120 °C

Procedure

140 mg (0.36 mmol) of (8S)-2-chloro-9-[2-(4-methylpyrid-3-yl)-2-oxoethyl]-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one and 94.26 mg (0.69 mmol) of (1S,4S)-2-oxa-5-azabicyclo[2.2.1]heptane hydrochloride are mixed together. The powder obtained is placed in a tube and 126 μl (0.90 mmol) of triethylamine are added. The tube is sealed and heated at 120° C. in an oil bath for 2 hours. The crude product obtained is taken up in water and extracted with ethyl acetate. The organic phase is dried over magnesium sulfate and then evaporated to dryness. The residue is purified by chromatography on silica gel (eluent: 95/5 EtOAc/MeOH) to give 120 mg of (8S)-9-[2-(4-methylpyrid-3-yl)-2-oxoethyl]-2-(1S,4S)-2-oxa-5-azabicyclo[2.2.1]hept-5-yl-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one, the characteristics of which are as follows:

Workup

  1. customThe powder obtained
  2. customis placed in a tube
  3. customThe tube is sealed
  4. customThe crude product obtained
  5. extractionextracted with ethyl acetate
  6. dry with materialThe organic phase is dried over magnesium sulfate
  7. customevaporated to dryness
  8. customThe residue is purified by chromatography on silica gel (eluent: 95/5 EtOAc/MeOH)

Sources & evidence

ORD record
ord-b6e221f9ca7d475b8c6aff27b3010ee6
Source dataset
uspto-grants-2016_04
Patent number
US09321790B2

Reaction notes

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