Water → HCID 69082672, compound

HRID 594750Notes

Reaction equation

HRID 594750 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([O:8]C)[C:3]=1[CH:10]1[N:14]([CH2:15][C:16]2[CH:21]=[CH:20][C:19]([O:22][C:23]([F:26])([F:25])[F:24])=[CH:18][CH:17]=2)[C:13](=[O:27])[CH:12]([OH:28])[CH2:11]1.O>C(Cl)Cl>[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([OH:8])[C:3]=1[CH:10]1[N:14]([CH2:15][C:16]2[CH:17]=[CH:18][C:19]([O:22][C:23]([F:25])([F:26])[F:24])=[CH:20][CH:21]=2)[C:13](=[O:27])[CH:12]([OH:28])[CH2:11]1

Participants

4

Reactant 2

HCID 962WaterHCID 69082711HCID 69082711, compound

Product 1

HCID 69082672HCID 69082672, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A cooled (−78° C.) solution of rac-(3R*,5S*)-5-(2-fluoro-6-methoxyphenyl)-3-hydroxy-1-(4-(trifluoromethoxy)benzyl)pyrrolidin-2-one (compound corresponding to example 293; 355 mg; 0.88 mmol) in anh. DCM (8 ml) was treated dropwise with a solution of boron tribromide BBr3 (1.0 M in DCM; 4.45 ml; 4.45 mmol). The resulting mixture was further stirred at rt, under nitrogen, for 17 h. Water was added dropwise to the cooled (0° C.) reaction mixture, and the separated aq. layer was extracted with DCM. The mixed organic layers were washed with brine, dried over anh. MgSO4, filtered and concentrated to dryness under reduced pressure affording rac-(3R*,5S*)-5-(2-fluoro-6-hydroxyphenyl)-3-hydroxy-1-(4-(trifluoromethoxy)benzyl)pyrrolidin-2-one. LC-MS (conditions A): tR=0.83 min.; [M+H]+: 386.05 g/mol.

Workup

  1. temperaturecooled
  2. custom(0° C.) reaction mixture
  3. extractionthe separated aq. layer was extracted with DCM
  4. washThe mixed organic layers were washed with brine
  5. dry with materialdried over anh. MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated to dryness under reduced pressure

Sources & evidence

ORD record
ord-5c0056f0233c4803a1deb6e045fee267
Source dataset
uspto-grants-2016_01
Patent number
US09242970B2

Reaction notes

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