Triethylamine → 2-[4-(2-Benzyloxyacetylamino)phenoxy]propionic acid methyl ester

HRID 2169744Notes

Reaction equation

HRID 2169744 reaction equation
[CH2:1]([O:8][CH2:9][C:10](Cl)=[O:11])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:13][O:14][C:15](=[O:26])[CH:16]([O:18][C:19]1[CH:24]=[CH:23][C:22]([NH2:25])=[CH:21][CH:20]=1)[CH3:17].C(N(CC)CC)C>CC(C)=O>[CH3:13][O:14][C:15](=[O:26])[CH:16]([O:18][C:19]1[CH:24]=[CH:23][C:22]([NH:25][C:10](=[O:11])[CH2:9][O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[CH:21][CH:20]=1)[CH3:17]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 177085Benzyloxyacetyl chlorideHCID 22060471Methyl 2-(4-aminophenoxy)propanoate

Product 1

HCID 592539632-[4-(2-Benzyloxyacetylamino)phenoxy]propionic acid methyl esterYield 59.8%

Reagents, catalysts & solvents 1

HCID 180AcetoneSolvent

Procedure

Benzyloxyacetyl chloride (28 g, 152 mmol) was added dropwise to a mixture of 2-(4-aminophenoxy)propionic acid methyl ester 18 (20 g, 102.5 mmol) and triethylamine (23 ml, 165 mmol) in acetone (120 ml) at 0° C. and stirred at room temperature for 12 hrs. Solids were filtered off, acetone distilled off and water (100 ml) added. Crude 68 was extracted into chloroform, washed with 5% sodium bicarbonate (2×100 ml), water (200 ml), dried over sodium sulphate and distilled. Crude 68 was purified by column chromatography on silica gel using benzene as eluant to get pure 68 (21 g, 59.8%) as a light brown powder. M.p: 67-70° C.

Workup

  1. filtrationSolids were filtered off
  2. distillationacetone distilled off
  3. additionwater (100 ml) added
  4. extractionCrude 68 was extracted into chloroform
  5. washwashed with 5% sodium bicarbonate (2×100 ml), water (200 ml)
  6. dry with materialdried over sodium sulphate
  7. distillationdistilled
  8. customCrude 68 was purified by column chromatography on silica gel

Sources & evidence

ORD record
ord-a7a983eac75a4a4986559db27d6d8266
Source dataset
uspto-grants-2015_06
Patent number
USRE045548E1

Reaction notes

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