Hydrogen Peroxide → (S)-4-[4-[4-(Hydroxydiphenylmethyl)-1-piperidinyl]-1-hydroxybutyl]-alpha, alpha-dimethylbenzeneacetic acid, ethyl ester

HRID 1266621Notes

Reaction equation

HRID 1266621 reaction equation
B(Cl)([C@H]1[C@H](C)[C@H]2C(C)(C)[C@@H](C2)C1)[C@H:2]1[C@H](C)[C@@H]2C(C)(C)[C@@H](C2)C1.[OH:23][C:24]([C:55]1[CH:60]=[CH:59][CH:58]=[CH:57][CH:56]=1)([C:49]1[CH:54]=[CH:53][CH:52]=[CH:51][CH:50]=1)[CH:25]1[CH2:30][CH2:29][N:28]([CH2:31][CH2:32][CH2:33][C:34]([C:36]2[CH:41]=[CH:40][C:39]([C:42]([CH3:48])([CH3:47])[C:43]([O:45][CH3:46])=[O:44])=[CH:38][CH:37]=2)=[O:35])[CH2:27][CH2:26]1.O.OO>O1CCCC1>[OH:23][C:24]([C:55]1[CH:60]=[CH:59][CH:58]=[CH:57][CH:56]=1)([C:49]1[CH:54]=[CH:53][CH:52]=[CH:51][CH:50]=1)[CH:25]1[CH2:30][CH2:29][N:28]([CH2:31][CH2:32][CH2:33][C@@H:34]([C:36]2[CH:41]=[CH:40][C:39]([C:42]([CH3:48])([CH3:47])[C:43]([O:45][CH2:46][CH3:2])=[O:44])=[CH:38][CH:37]=2)[OH:35])[CH2:27][CH2:26]1

Participants

6

Reactant 4

HCID 784Hydrogen PeroxideHCID 962WaterHCID 99581012-[4-[4-[4-(Hydroxydiphenylmethyl)-1-piperidinyl]-1-oxobutyl]phenyl]-2,2-dimethylacetic acid methyl esterHCID 20642586(-)-B-chlorodiisopinocamphenylboran

Product 1

HCID 12074743(S)-4-[4-[4-(Hydroxydiphenylmethyl)-1-piperidinyl]-1-hydroxybutyl]-alpha, alpha-dimethylbenzeneacetic acid, ethyl ester

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

Dissolve (−)-B-chlorodiisopinocamphenylborane (2.5 g, 7.8 mmol) in anhydrous tetrahydrofuran (5 mL). Add a solution of 4-[4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]-1-oxobutyl]-α,α-dimethylbenzeneacetic acid, methyl ester (3.54 mmol) in anhydrous tetrahydrofuran (5 mL). Stir at room temperature for 3 days and cool to 0° C. Add water (1 mL) and 30% hydrogen peroxide (2 mL) and stir for 20 minutes. Add methylene chloride (30 mL) and wash with brine (30 mL), then aqueous sodium hydrogen carbonate (30 mL), then brine (30 mL). Dry (MgSO4), evaporate the solvent in vacuo and purify by chromatography to give the title compound.

Workup

  1. temperaturecool to 0° C
  2. washAdd methylene chloride (30 mL) and wash with brine (30 mL)
  3. dry with materialDry (MgSO4)
  4. customevaporate the solvent in vacuo
  5. custompurify by chromatography

Sources & evidence

ORD record
ord-1a0c1dd871b04ac78b42cfbba2f80ed0
Source dataset
uspto-grants-2003_04
Patent number
US06548675B2

Reaction notes

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