Triethylamine → HCID 66758148, compound

HRID 457105Notes

Reaction equation

HRID 457105 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C:11]([C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=2)([OH:14])[CH:10]([NH2:22])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:23](Cl)(=[O:26])[CH2:24][CH3:25].C(N(CC)CC)C>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C:11]([C:15]2[CH:16]=[CH:17][C:18]([Cl:21])=[CH:19][CH:20]=2)([OH:14])[CH:10]([NH:22][C:23](=[O:26])[CH2:24][CH3:25])[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 62324Propionyl chlorideHCID 66758362HCID 66758362, compound

Product 1

HCID 66758148HCID 66758148, compoundYield 99.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

3-Amino-4-(4-chloro-phenyl)-4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester (0.116 g, 0.35 mmol) was dissolved in CH2Cl2. Propionyl chloride (0.034 mL, 0.39 mmol) and triethylamine (0.109 mL, 0.78 mmol) were added and the solution was stirred for 24 h at room temperature. The reaction was concentrated in vacuo, then purified by Biotage flash chromatography (30% ethyl acetate/70% hexane to 50% ethyl acetate/50% hexane) to yield the title compound (0.133 g, 97%). 1H-NMR (CDCl3): δ 0.87 (t, 3H), 1.44 (s, 9H), 1.78–1.95 (m, 3H), 2.20 (dt, 1H), 3.24 (t, 1H), 3.50 (d, 1H), 3.90 (t, 1H), 4.08 (q, 2H), 4.28 (d, 1H), 5.48 (bd, 1H), 7.26 (d, 2H), 7.37 (d, 2H). ESI-MS m/z: 383 (M+1), retention time 2.21.

Workup

  1. concentrationThe reaction was concentrated in vacuo
  2. custompurified by Biotage flash chromatography (30% ethyl acetate/70% hexane to 50% ethyl acetate/50% hexane)

Sources & evidence

ORD record
ord-fba44d0db82045daadabecc4e206385a
Source dataset
uspto-grants-2007_03
Patent number
US07186729B2

Reaction notes

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