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Iodobenzene → (8S)-2-(morpholin-4-yl)-9-phenyl-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one

HRID 80605
Notes
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Reaction equation

HRID 80605 reaction equation
[N:1]1([C:7]2[N:8]=[C:9]3[NH:17][C@H:16]([C:18]([F:21])([F:20])[F:19])[CH2:15][CH2:14][N:10]3[C:11](=[O:13])[CH:12]=2)[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].I[C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1>[Cu](I)I.CN(C)C=O>[N:1]1([C:7]2[N:8]=[C:9]3[N:17]([C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=4)[C@H:16]([C:18]([F:20])([F:21])[F:19])[CH2:15][CH2:14][N:10]3[C:11](=[O:13])[CH:12]=2)[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 11575IodobenzeneHCID 62657Potassium Phosphate, TribasicHCID 136238743(S)-8-(Morpholin-4-yl)-2-(trifluoromethyl)-1,2,3,4-tetrahydropyrimido[1,2-a]pyrimidin-6-one

Product 1

HCID 49853991(8S)-2-(morpholin-4-yl)-9-phenyl-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one

Reagents, catalysts & solvents 2

HCID 83717
Copper iodide
Catalyst
HCID 6228DimethylformamideSolvent

Conditions

Temperature
150 °C

Procedure

In a microwave tube, 425 mg of (S)-2-morpholin-4-yl-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one (Example 1e) are introduced into 1 ml of dimethylformamide, 422 mg of tripotassium phosphate, 380 mg of copper iodide and 2 ml of iodobenzene. The mixture obtained is heated in a microwave oven for 30 minutes at 150° C. The reaction mixture is then centrifuged. The separated supernatant is then rinsed with ethyl acetate and then evaporated to dryness. The residue is taken up with ethyl acetate and the solution obtained is washed with water. The organic phase is separated and then dried over magnesium sulphate, filtered, and concentrated under vacuum. After purification by silica chromatography (gradient of 5% to 15% of the eluent CH2Cl2/MeOH/NH4OH 28% 38/17/2 in dichloromethane), 150 mg of (8S)-2-(morpholin-4-yl)-9-phenyl-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one are obtained, the characteristics of which are the following:

Workup

  1. customThe mixture obtained
  2. washThe separated supernatant is then rinsed with ethyl acetate
  3. customevaporated to dryness
  4. customthe solution obtained
  5. washis washed with water
  6. customThe organic phase is separated
  7. dry with materialdried over magnesium sulphate
  8. filtrationfiltered
  9. concentrationconcentrated under vacuum
  10. customAfter purification by silica chromatography (gradient of 5% to 15% of the eluent CH2Cl2/MeOH/NH4OH 28% 38/17/2 in dichloromethane), 150 mg of (8S)-2-(morpholin-4-yl)-9-phenyl-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one
  11. customare obtained

Sources & evidence

ORD record
ord-6bf47a4ec8af4408815c10fc742f740f
Source dataset
uspto-grants-2014_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08846670B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes