Methyl iodide → 2-Chloro-9-cyclohexyl-7-fluoro-5,7-dimethyl-8,9-dihydro-5H-pyrimido[4,5-b][1,4]diazepin-6(7H)-one

HRID 914156Notes

Reaction equation

HRID 914156 reaction equation
[Cl:1][C:2]1[N:3]=[CH:4][C:5]2[NH:11][C:10](=[O:12])[C:9]([F:14])([CH3:13])[CH2:8][N:7]([CH:15]3[CH2:20][CH2:19][CH2:18][CH2:17][CH2:16]3)[C:6]=2[N:21]=1.[H-].[Na+].[CH3:24]I>CC(N(C)C)=O>[Cl:1][C:2]1[N:3]=[CH:4][C:5]2[N:11]([CH3:24])[C:10](=[O:12])[C:9]([F:14])([CH3:13])[CH2:8][N:7]([CH:15]3[CH2:20][CH2:19][CH2:18][CH2:17][CH2:16]3)[C:6]=2[N:21]=1

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 579555972-chloro-9-cyclohexyl-7-fluoro-7-methyl-8,9-dihydro-5H-pyrimido[4,5-b][1,4]diazepin-6(7H)-one

Product 1

HCID 579556562-Chloro-9-cyclohexyl-7-fluoro-5,7-dimethyl-8,9-dihydro-5H-pyrimido[4,5-b][1,4]diazepin-6(7H)-one

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Procedure

To a solution of 2-chloro-9-cyclohexyl-7-fluoro-7-methyl-8,9-dihydro-5H-pyrimido[4,5-b][1,4]diazepin-6(7H)-one (313 mg, 2.85 mmol) in 10 mL of DMA was added sodium hydride (60% dispersion in mineral oil, 44 mg, 1.1 mmol) at 0° C., followed by the dropwise addition of methyl iodide (0.07 mL, 1.1 mmol). The reaction mixture was warmed up to rt and stirred for 1 h. The whole was poured into ice-water, extracted with ethyl acetate. The organic layer was washed with brine and dried over Na2SO4. The solution was concentrated in vacuo and used for next step reaction (330 mg). [M+H] calc'd for C15H20ClFN4O, 327. found 327.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with brine
  3. dry with materialdried over Na2SO4
  4. concentrationThe solution was concentrated in vacuo
  5. customused for next step reaction (330 mg)

Sources & evidence

ORD record
ord-b7a7baaf71b74d5e828a6b38ae6b1523
Source dataset
uspto-grants-2011_09
Patent number
US08026234B2

Reaction notes

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