Triethylamine → Ethyl 4-(2-(11-carbomethoxyundecanoylamino)phenoxy)butyrate

HRID 1604407Notes

Reaction equation

HRID 1604407 reaction equation
[NH2:1][C:2]1[CH:16]=[CH:15][CH:14]=[CH:13][C:3]=1[O:4][CH2:5][CH2:6][CH2:7][C:8]([O:10][CH2:11][CH3:12])=[O:9].C(N(CC)CC)C.[C:24]([O:39][CH3:40])(=[O:38])[CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][C:35]([O-])=[O:36]>CCOCC>[C:24]([CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][C:35]([NH:1][C:2]1[CH:16]=[CH:15][CH:14]=[CH:13][C:3]=1[O:4][CH2:5][CH2:6][CH2:7][C:8]([O:10][CH2:11][CH3:12])=[O:9])=[O:36])([O:39][CH3:40])=[O:38]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 11816929Ethyl 4-(2-aminophenoxy)butanoateHCID 22672980Dodecanedioic acid, monomethyl ester

Product 1

HCID 18796179Ethyl 4-(2-(11-carbomethoxyundecanoylamino)phenoxy)butyrateYield 85%

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent2×

Procedure

To a stirred, ice-cold solution of 0.89 g (4.0 mM) amine (4) and dried triethylamine (1.2 mL) in dry ether (40 mL) is added dropwise over ca. 4 minutes a solution of acid chloride (7) (1.04 g, 4.6 mM) in 20 mL of dry ether. The resultant mixture is allowed to stir cold for 20 minutes, and then at room temperature overnight. After filtering off the triethylamine hydrochloride, the ether filtrate is concentrated in vacuo and the residue chromatographed on an 82 g silica gel column using 20% ethyl acetate/hexane as eluant to give 1.49 g (85%) of (8) as a waxy solid.

Workup

  1. customat room temperature
  2. customovernight
  3. filtrationAfter filtering off the triethylamine hydrochloride
  4. concentrationthe ether filtrate is concentrated in vacuo
  5. customthe residue chromatographed on an 82 g silica gel column

Sources & evidence

ORD record
ord-9ee75ef55b4740f28f756ec7c54ee1ea
Source dataset
uspto-grants-1999_11
Patent number
US05994362

Reaction notes

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