Diisopropylethylamine → Tert-butyl 4-[[(2-chloro-2-phenyl-acetyl)-[(4-methoxyphenyl)methyl]amino]methyl]-4-hydroxy-piperidine-1-carboxylate

HRID 73041

Reaction equation

HRID 73041 reaction equation
[OH:1][C:2]1([CH2:15][NH:16][CH2:17][C:18]2[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][CH:19]=2)[CH2:7][CH2:6][N:5]([C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH2:4][CH2:3]1.C(N(C(C)C)CC)(C)C.[Cl:35][CH:36]([C:40]1[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=1)[C:37](Cl)=[O:38]>C(Cl)Cl>[Cl:35][CH:36]([C:40]1[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=1)[C:37]([N:16]([CH2:15][C:2]1([OH:1])[CH2:7][CH2:6][N:5]([C:8]([O:10][C:11]([CH3:13])([CH3:12])[CH3:14])=[O:9])[CH2:4][CH2:3]1)[CH2:17][C:18]1[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][CH:19]=1)=[O:38]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 102902Chloro(phenyl)acetyl chlorideHCID 68291769Tert-butyl 4-hydroxy-4-[[(4-methoxyphenyl)methylamino]methyl]piperidine-1-carboxylate

Product 1

HCID 68290933Tert-butyl 4-[[(2-chloro-2-phenyl-acetyl)-[(4-methoxyphenyl)methyl]amino]methyl]-4-hydroxy-piperidine-1-carboxylateYield 73.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a mixture of tert-butyl 4-hydroxy-4-[[(4-methoxyphenyl)methylamino]methyl]piperidine-1-carboxylate (1.06 g, 3.01 mmol) and diisopropylethylamine (1 mL, 5.74 mmol) in DCM (15 mL) at 0° C. was added 2-chloro-2-phenyl-acetyl chloride (654 mg, 3.46 mmol) and the reaction mixture was stirred at room temperature for 16 hours. The reaction mixture was concentrated in vacuo and the residue was purified by silica gel column chromatography using 0-100% EtOAc/DCM as eluent to give tert-butyl 4-[[(2-chloro-2-phenyl-acetyl)-[(4-methoxyphenyl)methyl]amino]methyl]-4-hydroxy-piperidine-1-carboxylate (1.11 g, 73%) as a pale yellow oil. ESI-MS m/z calc. 502.2. Found 503.5 (M+1)+; Retention time: 1.90 minutes (3 min run).

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-a7a0d58110a84abf9de0e886009666b0
Source dataset
uspto-grants-2014_09
Patent number
US08828996B2

Linked notes

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