Hydrochloric Acid → HCID 25055731, compound

HRID 1513036Notes

Reaction equation

HRID 1513036 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([O:8][CH3:9])[C:5]([O:10][CH2:11][C:12]2[C:17]([O:18][CH3:19])=[CH:16][CH:15]=[C:14]([F:20])[C:13]=2[F:21])=[CH:4][C:3]=1[N:22]1[C:30](=[O:31])[NH:29][C:28]2[C:23]1=[N:24][C:25]([C:32]([O:34]CC)=[O:33])=[N:26][CH:27]=2.O1CCCC1.O.[OH-].[Li+].Cl>O.CO>[C:32]([C:25]1[N:24]=[C:23]2[C:28]([NH:29][C:30](=[O:31])[N:22]2[C:3]2[CH:4]=[C:5]([O:10][CH2:11][C:12]3[C:17]([O:18][CH3:19])=[CH:16][CH:15]=[C:14]([F:20])[C:13]=3[F:21])[C:6]([O:8][CH3:9])=[CH:7][C:2]=2[Cl:1])=[CH:27][N:26]=1)([OH:34])=[O:33]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 8028TetrahydrofuranHCID 168937Lithium hydroxide, monohydrateHCID 68511559HCID 68511559, compound

Product 1

HCID 25055731HCID 25055731, compoundYield 46.5%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

To 9-[2-chloro-5-(2,3-difluoro-6-methoxybenzyloxy)-4-methoxyphenyl]-2-cyano-7,9-dihydro-8H-purin-8-one (0.12 g) was added hydrochloric acid (20% ethanol solution, 3 mL), and the mixture was stirred at room temperature overnight. To the reaction mixture was added water, and the precipitated crystals were collected by filtration. The crystals were washed with water and diethyl ether, and dried under reduced pressure. The obtained crystals were purified by column chromatography on silica gel (eluent: ethyl acetate) to give 9-[2-chloro-5-(2,3-difluoro-6-methoxybenzyloxy)-4-methoxyphenyl]-2-ethoxycarbonyl-7,9-dihydro-8H-purin-8-one (93 mg). To the obtained 9-[2-chloro-5-(2,3-difluoro-6-methoxy-benzyloxy)-4-methoxyphenyl]-2-ethoxycarbonyl-7,9-dihydro-8H-purin-8-one (50 mg) were added tetrahydrofuran (4 mL), methanol (2 mL), water (2 mL) and lithium hydroxide monohydrate (40 mg), and the mixture was stirred at room temperature for 2 hours. The reaction mixture was acidified by adding 1 mol/L hydrochloric acid, and the resulting mixture was extracted with ethyl acetate. The extract was washed with water and brine, and the solvent was removed under reduced pressure. The residual solids were suspended in diethyl ether, and collected by filtration. The collected solids were washed with water and diethyl ether, and dried under reduced pressure to give the title compound (22 mg).

Workup

  1. extractionthe resulting mixture was extracted with ethyl acetate
  2. washThe extract was washed with water and brine
  3. customthe solvent was removed under reduced pressure
  4. filtrationcollected by filtration
  5. washThe collected solids were washed with water and diethyl ether
  6. customdried under reduced pressure

Sources & evidence

ORD record
ord-b5b7894604a04ff2a0c5c5fbbb3b4c19
Source dataset
uspto-grants-2012_07
Patent number
US08217069B2

Reaction notes

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