Hexyl(2-phenylethyl)amine → Ethyl(2S)-2-ethoxy-3-(4-{2-[hexyl(2-phenylethyl)amino]-2-oxoethoxy}phenyl)propanoate

HRID 2109010Notes

Reaction equation

HRID 2109010 reaction equation
[CH2:1]([O:3][C@H:4]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[CH2:5][C:6]1[CH:16]=[CH:15][C:9]([O:10][CH2:11][C:12]([OH:14])=O)=[CH:8][CH:7]=1)[CH3:2].[CH2:22]([NH:28][CH2:29][CH2:30][C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1)[CH2:23][CH2:24][CH2:25][CH2:26][CH3:27].Cl.C(N=C=NCCCN(C)C)C>C(Cl)Cl.CN(C1C=CN=CC=1)C>[CH2:1]([O:3][C@@H:4]([CH2:5][C:6]1[CH:7]=[CH:8][C:9]([O:10][CH2:11][C:12]([N:28]([CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH3:27])[CH2:29][CH2:30][C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)=[O:14])=[CH:15][CH:16]=1)[C:17]([O:19][CH2:20][CH3:21])=[O:18])[CH3:2]

Participants

6

Reactant 3

HCID 541888Hexyl(2-phenylethyl)amineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 11162260{4-[(2S)-2,3-Diethoxy-3-oxopropyl]phenoxy}acetic Acid

Product 1

HCID 68858185Ethyl(2S)-2-ethoxy-3-(4-{2-[hexyl(2-phenylethyl)amino]-2-oxoethoxy}phenyl)propanoateYield 70%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent2×

Procedure

To a solution of {4-[(2S)-2,3-diethoxy-3-oxopropyl]phenoxy}acetic acid (0.110 g, 0.37 mmol) in methylene chloride (3.7 mL) were added N-hexyl-2-phenylethylamine (0.080 g, 0.39 mmol) and DMAP (0.045 g, 0.37 mmol) followed by 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.071 g, 0.37 mmol), and the reaction mixture was stirred at room temperature overnight. The mixture was diluted with methylene chloride (25 mL), and the organic phase was washed with 5% HCl (3×25 mL), aqueous NaHCO3 (25 mL) and brine (25 mL), dried over Na2SO4, and concentrated in vacuo. Purification on a prepacked column of silica gel (Isolute® SPE Column, 5 g Si/25 mL) with methanol (0-1% gradient) in methylene chloride as the eluent yielded 0.125 g (70%) of a colourless oil.

Workup

  1. washthe organic phase was washed with 5% HCl (3×25 mL), aqueous NaHCO3 (25 mL) and brine (25 mL)
  2. dry with materialdried over Na2SO4
  3. concentrationconcentrated in vacuo
  4. customPurification on a prepacked column of silica gel (Isolute® SPE Column, 5 g Si/25 mL) with methanol (0-1% gradient) in methylene chloride as the eluent

Sources & evidence

ORD record
ord-5f2e4a5192f646829439ea9a9a6f3de0
Source dataset
uspto-grants-2009_04
Patent number
US07514471B2

Reaction notes

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