Triphenylphosphine → (R)-tert-butyl 3-((R)-(2-aminoethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylate

HRID 218374Notes

Reaction equation

HRID 218374 reaction equation
[N:1]([CH2:4][CH2:5][O:6][C@@H:7]([C:21]1[CH:26]=[CH:25][CH:24]=[C:23]([Cl:27])[CH:22]=1)[C@@H:8]1[CH2:13][CH2:12][CH2:11][N:10]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[CH2:9]1)=[N+]=[N-].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1COCC1.O>[NH2:1][CH2:4][CH2:5][O:6][C@@H:7]([C:21]1[CH:26]=[CH:25][CH:24]=[C:23]([Cl:27])[CH:22]=1)[C@@H:8]1[CH2:13][CH2:12][CH2:11][N:10]([C:14]([O:16][C:17]([CH3:20])([CH3:18])[CH3:19])=[O:15])[CH2:9]1

Participants

4

Reactant 2

HCID 11776TriphenylphosphineHCID 58017401(R)-tert-butyl 3-((R)-(2-azidoethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylate

Product 1

HCID 59598469(R)-tert-butyl 3-((R)-(2-aminoethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylateYield 83.4%

Reagents, catalysts & solvents 1

HCID 21881883Oxolane--water (1/1)Solvent

Procedure

(R)-tert-butyl 3-((R)-(2-azidoethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylate (13.3 g, 33.8 mmol) was dissolved in THF/H2O (20:1, 180 mL/9 mL), triphenylphosphine (36.0 g, 135 mmol) was added in portions. The reaction mixture was stirred overnight at rt. The solvent was removed under reduced pressure to the residue, which was purified on silica gel chromatography to afford (R)-tert-butyl 3-((R)-(2-aminoethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylate (10.4 g, purity: HPLC=75%).

Workup

  1. customThe solvent was removed under reduced pressure to the residue, which
  2. customwas purified on silica gel chromatography

Sources & evidence

ORD record
ord-88a3ac186a014ffabdc07307ea61f2ee
Source dataset
uspto-grants-2012_06
Patent number
US08198453B2

Reaction notes

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