Tetrahydrofuran → (1S)-1-(3-amino-4-benzyloxyphenyl)-2-bromoethan-1-ol

HRID 1183861Notes

Reaction equation

HRID 1183861 reaction equation
[N+:1]([C:4]1[CH:5]=[C:6]([C@H:18]([OH:21])[CH2:19][Br:20])[CH:7]=[CH:8][C:9]=1[O:10][CH2:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)([O-])=O.C1COCC1>C1(C)C=CC=CC=1>[NH2:1][C:4]1[CH:5]=[C:6]([C@H:18]([OH:21])[CH2:19][Br:20])[CH:7]=[CH:8][C:9]=1[O:10][CH2:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1

Participants

4

Reactant 2

HCID 8028TetrahydrofuranHCID 29944564(S)-1-(4-Benzyloxy-3-nitrophenyl)-2-bromoethanol

Product 1

HCID 59303911(1S)-1-(3-amino-4-benzyloxyphenyl)-2-bromoethan-1-olYield 69.6%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

A solution of the product of step A) (18.7 g, 53.1 mmol) in toluene (40 mL) and THF (40 mL) was added to a Parr shaker bottle containing Pt2O (370 mg). This mixture was shaken under H2 (50 psi, 344.74 kpa) until the reaction was complete (18 h). The catalyst was removed by filtration, and the filtrate was concentrated to an oil. Column chromatography (1 kg silica gel packed in and eluted with CH2Cl2/MeOH, 19:1) gave 11.9 g (69.6%) of the title compound.

Workup

  1. custom(18 h)
  2. customThe catalyst was removed by filtration
  3. concentrationthe filtrate was concentrated to an oil
  4. washColumn chromatography (1 kg silica gel packed in and eluted with CH2Cl2/MeOH, 19:1)

Sources & evidence

ORD record
ord-c76aad892c674175b39c64bd0112bf29
Source dataset
uspto-grants-2014_03
Patent number
US08664441B2

Reaction notes

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