Acetic Anhydride → HCID 90403408, compound

HRID 2200652Notes

Reaction equation

HRID 2200652 reaction equation
[Cl:1][C:2]1[CH:38]=[CH:37][C:5]([CH2:6][N:7]2[C:15]3[C:14](=[O:16])[N:13]([CH2:17][CH:18]([OH:22])[CH2:19][O:20][CH3:21])[C:12](=[O:23])[N:11]([CH3:24])[C:10]=3[N:9]=[C:8]2[O:25][C:26]2[CH:31]=[CH:30][CH:29]=[C:28]([O:32][C:33]([F:36])([F:35])[F:34])[CH:27]=2)=[CH:4][CH:3]=1.C(OC(=O)C)(=O)C>CS(C)=O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:6][N:7]2[C:15]3[C:14](=[O:16])[N:13]([CH2:17][C:18](=[O:22])[CH2:19][O:20][CH3:21])[C:12](=[O:23])[N:11]([CH3:24])[C:10]=3[N:9]=[C:8]2[O:25][C:26]2[CH:31]=[CH:30][CH:29]=[C:28]([O:32][C:33]([F:36])([F:34])[F:35])[CH:27]=2)=[CH:37][CH:38]=1

Participants

4

Reactant 2

HCID 7918Acetic AnhydrideHCID 90402990HCID 90402990, compound

Product 1

HCID 90403408HCID 90403408, compoundYield 30.2%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of 7-(4-chlorobenzyl)-1-(2-hydroxy-3-methoxypropyl)-3-methyl-8-(3-(trifluoromethoxy)phenoxy)-1H-purine-2,6(3H,7H)-dione (40 mg, 0.072 mmol, example 7f) in methyl sulfoxide (4 mL) was added acetic anhydride (37 mg, 0.363 mmol) dropwise. Then the mixture was stirred at 25° C. for 16 h. The mixture was partitioned between ethyl acetate and water and the organic phase was washed with brine, dried over sodium sulfate, filtered and was concentrated to give crude product. This crude material was further purified preparative HPLC to give 7-(4-chlorobenzyl)-1-(3-methoxy-2-oxopropyl)-3-methyl-8-(3-(trifluoromethoxy)phenoxy)-1H-purine-2,6(3H,7H)-dione (12 mg, 30.2%) as white solid. 1H-NMR (CD3OD) δ 7.56-7.52(t, 1H), 7.42-7.39(d, 2H), 7.36-7.31(m, 4H), 7.24-7.22(d, 1H), 5.45(s, 2H), 4.92(s, 2H), 4.24(s, 2H), 3.46(s, 3H), 3.39(s, 3H). LCMS retention time 3.210 min; LCMS MH+ 553.

Workup

  1. customThe mixture was partitioned between ethyl acetate and water
  2. washthe organic phase was washed with brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationwas concentrated
  6. customto give crude product

Sources & evidence

ORD record
ord-64dff9a1610a4b96a7b57f702966b0f3
Source dataset
uspto-grants-2016_06
Patent number
US09359359B2

Reaction notes

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