Methyl iodide → 2-Chloro-7,7-difluoro-9-(4-methoxy-benzyl)-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one

HRID 1676827Notes

Reaction equation

HRID 1676827 reaction equation
[Cl:1][C:2]1[N:3]=[CH:4][C:5]2[NH:11][C:10](=[O:12])[C:9]([F:14])([F:13])[CH2:8][N:7]([CH2:15][C:16]3[CH:21]=[CH:20][C:19]([O:22][CH3:23])=[CH:18][CH:17]=3)[C:6]=2[N:24]=1.[C:25](=O)([O-])[O-].[Cs+].[Cs+].IC>CN(C)C=O>[Cl:1][C:2]1[N:3]=[CH:4][C:5]2[N:11]([CH3:25])[C:10](=[O:12])[C:9]([F:14])([F:13])[CH2:8][N:7]([CH2:15][C:16]3[CH:17]=[CH:18][C:19]([O:22][CH3:23])=[CH:20][CH:21]=3)[C:6]=2[N:24]=1

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 10796Cesium carbonateHCID 866375222-Chloro-7,7-difluoro-9-(4-methoxy-benzyl)-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one

Product 1

HCID 866375232-Chloro-7,7-difluoro-9-(4-methoxy-benzyl)-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-oneYield 89.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 0.60 g (0.0017 mole) of 2-chloro-7,7-difluoro-9-(4-methoxy-benzyl)-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VI-291) in 8 mL of dimethylformamide was added 0.83 g (0.0026 mole) of cesium carbonate, followed by 0.32 mL (0.0051 mole) of iodomethane. After stirring four hours, the mixture filtered and then concentrated under reduced pressure. Ice water was added to the residue to give a precipitate. The solid was collected by filtration, washed with water and dried under vacuum to give 0.56 g of 2-chloro-7,7-difluoro-9-(4-methoxy-benzyl)-5-methyl-5,7,8,9-tetrahydro-pyrimido[4,5-b][1,4]diazepin-6-one (VII-291) as a white solid.

Workup

  1. filtrationthe mixture filtered
  2. concentrationconcentrated under reduced pressure
  3. additionIce water was added to the residue
  4. customto give a precipitate
  5. filtrationThe solid was collected by filtration
  6. washwashed with water
  7. customdried under vacuum

Sources & evidence

ORD record
ord-afc2674d88e54258a4b3865c13fe1ed4
Source dataset
uspto-grants-2011_08
Patent number
US08003785B2

Reaction notes

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