Water → tert-butyl (3R)-4-[2-(3-cyano-4-fluorophenyl)-2-hydroxyethyl]-3-(hydroxymethyl)piperazine-1-carboxylate

HRID 2175808Notes

Reaction equation

HRID 2175808 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]([C:10](=[O:27])[CH2:11][N:12]2[CH2:17][CH2:16][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:14][C@@H:13]2[CH2:25][OH:26])[CH:6]=[CH:7][C:8]=1[F:9])#[N:2].[BH4-].[Na+].O>CO>[C:1]([C:3]1[CH:4]=[C:5]([CH:10]([OH:27])[CH2:11][N:12]2[CH2:17][CH2:16][N:15]([C:18]([O:20][C:21]([CH3:22])([CH3:24])[CH3:23])=[O:19])[CH2:14][C@@H:13]2[CH2:25][OH:26])[CH:6]=[CH:7][C:8]=1[F:9])#[N:2]

Participants

5

Reactant 3

HCID 962WaterHCID 4311764Sodium borohydrideHCID 86727046tert-butyl (3R)-4-[2-(3-cyano-4-fluorophenyl)-2-oxoethyl]-3-(hydroxymethyl)piperazine-1-carboxylate

Product 1

HCID 86727047tert-butyl (3R)-4-[2-(3-cyano-4-fluorophenyl)-2-hydroxyethyl]-3-(hydroxymethyl)piperazine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of tert-butyl (3R)-4-[2-(3-cyano-4-fluorophenyl)-2-oxoethyl]-3-(hydroxymethyl)piperazine-1-carboxylate (20 g, 0.053 mol) in MeOH (400 mL) was added partionwise NaBH4 (15.6 g, 0.424 mol) at 0° C. and the mixture was stirred at r.t overnight. The reaction mixture was added water, extracted with EtOAc. The organic layer was combined, washed with brine, dried over Na2SO4 and concentrated in vacuum. The residue was purified with silica gel column chromatography to give the title compound.

Workup

  1. extractionextracted with EtOAc
  2. washwashed with brine
  3. dry with materialdried over Na2SO4
  4. concentrationconcentrated in vacuum
  5. customThe residue was purified with silica gel column chromatography

Sources & evidence

ORD record
ord-01100a2dc95f4d17bf97e6d4b74bb71f
Source dataset
uspto-grants-2015_06
Patent number
US09062070B2

Reaction notes

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