Methyl iodide → HCID 86651596, compound

HRID 2386278Notes

Reaction equation

HRID 2386278 reaction equation
[Cl:1][C:2]1[N:11]=[CH:10][C:9]2[N:8]([CH:12]3[CH2:17][CH2:16][S:15][CH2:14][CH2:13]3)[C:7](=[O:18])[CH:6]3[CH2:19][O:20][CH2:21][CH2:22][N:5]3[C:4]=2[N:3]=1.IC.[CH3:25]C([O-])(C)C.[Na+]>CS(C)=O>[Cl:1][C:2]1[N:11]=[CH:10][C:9]2[N:8]([CH:12]3[CH2:13][CH2:14][S:15][CH2:16][CH2:17]3)[C:7](=[O:18])[C:6]3([CH3:25])[CH2:19][O:20][CH2:21][CH2:22][N:5]3[C:4]=2[N:3]=1

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 23676156Sodium t-butoxideHCID 86651595HCID 86651595, compound

Product 1

HCID 86651596HCID 86651596, compoundYield 11%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

To a mixture of 2-chloro-5-(tetrahydro-2H-thiopyran-4-yl)-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one (83.6 mg, 0.245 mmol) and iodomethane (0.077 ml, 1.226 mmol) in DMSO (3 ml) at 0° C. was added sodium 2-methylpropan-2-olate (47.1 mg, 0.491 mmol). The ice-bath was removed and the reaction mixture was stirred at room temperature for 16 hours. The reaction mixture was poured into water and extracted with EtOAc. The organic layers were washed with water (containing Na2S2O3), dried and concentrated in vacuo to give a crude oil. The crude residue was purified by silica gel chromatography (hexane/ethyl acetate, 19:1 to 1:1) to afford 2-chloro-6a-methyl-5-(tetrahydro-2H-thiopyran-4-yl)-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one (9.4 mg, 0.026 mmol, 11% yield) as a colorless oil. MS [M+H] found 355.

Workup

  1. customThe ice-bath was removed
  2. additionThe reaction mixture was poured into water
  3. extractionextracted with EtOAc
  4. washThe organic layers were washed with water (containing Na2S2O3)
  5. customdried
  6. concentrationconcentrated in vacuo
  7. customto give a crude oil
  8. customThe crude residue was purified by silica gel chromatography (hexane/ethyl acetate, 19:1 to 1:1)

Sources & evidence

ORD record
ord-c669c5a5282a452586f6f9ccf359ee02
Source dataset
uspto-grants-2012_09
Patent number
US08268819B2

Reaction notes

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