Triethylamine → 5-[2-(5-Chloro-2-methoxy-phenyl)-2-oxo-ethylcarbamoyl]-pentanoic acid methyl ester

HRID 1443696Notes

Reaction equation

HRID 1443696 reaction equation
Cl.CN(C)CCCN=C=NCC.[CH3:13][O:14][C:15](=[O:23])[CH2:16][CH2:17][CH2:18][CH2:19][C:20]([OH:22])=O.Cl.[NH2:25][CH2:26][C:27]([C:29]1[CH:34]=[C:33]([Cl:35])[CH:32]=[CH:31][C:30]=1[O:36][CH3:37])=[O:28].C(N(CC)CC)C>CN(C)C1C=CN=CC=1.C(Cl)Cl>[CH3:13][O:14][C:15](=[O:23])[CH2:16][CH2:17][CH2:18][CH2:19][C:20](=[O:22])[NH:25][CH2:26][C:27]([C:29]1[CH:34]=[C:33]([Cl:35])[CH:32]=[CH:31][C:30]=1[O:36][CH3:37])=[O:28]

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 12328monoMethyl adipateHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 684951822-Amino-1-(5-chloro-2-methoxy-phenyl)-ethanone hydrochloride

Product 1

HCID 684924995-[2-(5-Chloro-2-methoxy-phenyl)-2-oxo-ethylcarbamoyl]-pentanoic acid methyl esterYield 65.6%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent2×

Procedure

Dissolve 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (8.0362 g, 41.92 mmol), 4-(dimethylamino)pryidine (1.0525 g, 8.62 mmol) and adipic acid monomethyl ester (6.71 g, 41.90 mmol) in 100 mL of CH2Cl2 and allow it to stir at room temperature for 45 minutes. Add crude 2-amino-1-(5-chloro-2-methoxy-phenyl)-ethanone hydrochloride (10.99 g, 46.55 mmol) and triethylamine (9.42 g, 93.1 mmol) to the reaction mixture and allow it to stir at ambient temperature for 21 hours. Dilute the reaction with 200 mL of CH2Cl2 and wash it with 1 N HCl (2×), saturated aqueous NaHCO3 (2×) and brine (1×). Dry the organic layer with MgSO4. Filter off the drying agent and concentrate in vacuo to afford 9.39 g of the crude titled product: mass spectrum: m/z=342.1 (M+H).

Workup

  1. stirringto stir at ambient temperature for 21 hours
  2. additionDilute
  3. washwash it with 1 N HCl (2×), saturated aqueous NaHCO3 (2×) and brine (1×)
  4. dry with materialDry the organic layer with MgSO4
  5. filtrationFilter off the drying agent
  6. concentrationconcentrate in vacuo

Sources & evidence

ORD record
ord-3c54c5a41a7d43b4955689fcadc249b7
Source dataset
uspto-grants-2010_02
Patent number
US07662771B2

Reaction notes

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