Water → HCID 66975148, compound

HRID 1022646Notes

Reaction equation

HRID 1022646 reaction equation
[CH2:1]([N:8]1[CH2:14][CH:13]([C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[C:17]([Cl:22])[CH:16]=2)[CH:12]([CH2:23][O:24][Si:25]([C:28]([CH3:31])([CH3:30])[CH3:29])([CH3:27])[CH3:26])[O:11][CH2:10][C:9]1=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.B.O>C1COCC1>[CH2:1]([N:8]1[CH2:14][CH:13]([C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[C:17]([Cl:22])[CH:16]=2)[CH:12]([CH2:23][O:24][Si:25]([C:28]([CH3:31])([CH3:30])[CH3:29])([CH3:26])[CH3:27])[O:11][CH2:10][CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 962WaterHCID 6331BoraneHCID 66975646HCID 66975646, compound

Product 1

HCID 66975148HCID 66975148, compoundYield 78%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a solution of (6RS,7RS)-4-benzyl-7-({[tert-butyl(dimethyl)silyl]oxy}methyl)-6-(3,4-dichlorophenyl)-1,4-oxazepan-3-one (40.5 g) in THF (150 mL) was added dropwise 1.2 M borane.THF complex/THF solution (150 mL) at room temperature, and the mixture was stirred under nitrogen purging at 60° C. for 2 hr. After cooling to room temperature, water was added carefully, and the mixture was stirred at room temperature for 1 hr, and extracted with ethyl acetate. The organic layer was washed with brine, and dried over anhydrous sodium sulfate, and the solvent was evaporated. The residue was purified by silica gel column chromatography (eluent; hexane:ethyl acetate (0%-50%)) to give the title compound (30.7 g) as a pale-yellow oil.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. customthe solvent was evaporated
  5. customThe residue was purified by silica gel column chromatography (eluent; hexane:ethyl acetate (0%-50%))

Sources & evidence

ORD record
ord-22d7ee85528e4e58ab5befd43d8bd6bb
Source dataset
uspto-grants-2014_05
Patent number
US08722662B2

Reaction notes

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