Water → (6R)-8-benzyl-6-(methoxymethyl)-3-[2-(methoxymethyl)pyrrolidin-1-yl]-6,7,8,9-tetrahydropyrazino[2,3-f][1,4]oxazepine

HRID 1879751Notes

Reaction equation

HRID 1879751 reaction equation
[CH2:1]([N:8]([CH2:15][C:16]1[C:21](Cl)=[N:20][C:19]([N:23]2[CH2:27][CH2:26][CH2:25][CH:24]2[CH2:28][O:29][CH3:30])=[CH:18][N:17]=1)[CH2:9][C@@H:10]([OH:14])[CH2:11][O:12][CH3:13])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CC(C)([O-])C.[K+].O>CN(C=O)C>[CH2:1]([N:8]1[CH2:15][C:16]2[N:17]=[CH:18][C:19]([N:23]3[CH2:27][CH2:26][CH2:25][CH:24]3[CH2:28][O:29][CH3:30])=[N:20][C:21]=2[O:14][C@@H:10]([CH2:11][O:12][CH3:13])[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 962WaterHCID 23665647Potassium tert-butoxideHCID 86649011HCID 86649011, compound

Product 1

HCID 66993312(6R)-8-benzyl-6-(methoxymethyl)-3-[2-(methoxymethyl)pyrrolidin-1-yl]-6,7,8,9-tetrahydropyrazino[2,3-f][1,4]oxazepineYield 88.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of (2R)-1-[benzyl({3-chloro-5-[2-(methoxymethyl)pyrrolidin-1-yl]pyrazin-2-yl}methyl)amino]-3-methoxypropan-2-ol (578 mg) in DMF (10 mL) was added potassium tert-butoxide (179 mg), and the mixture was stirred at room temperature for 2 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (solvent gradient: 10→50% ethyl acetate/hexane) to give the title compound (467 mg, 88%).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with water and saturated brine
  3. dry with materialdried over magnesium sulfate
  4. customthe solvent was evaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (solvent gradient: 10→50% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-df5c1266e5804d129e7a5948733d77f5
Source dataset
uspto-grants-2012_11
Patent number
US08318722B2

Reaction notes

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