Ethylamine → 3-[(4-Chloro-benzyl)-ethylcarbamoylmethyl-amino]-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 557071Notes

Reaction equation

HRID 557071 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH:10]([N:13]([CH2:22][C:23]([OH:25])=O)[CH2:14][C:15]2[CH:20]=[CH:19][C:18]([Cl:21])=[CH:17][CH:16]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:26][CH2:27][N:28]=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.CN1CCOCC1.C(N)C>O1CCCC1>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH:10]([N:13]([CH2:14][C:15]2[CH:16]=[CH:17][C:18]([Cl:21])=[CH:19][CH:20]=2)[CH2:22][C:23](=[O:25])[NH:28][CH2:27][CH3:26])[CH2:9]1)=[O:7])([CH3:3])([CH3:4])[CH3:2]

Participants

7

Reactant 5

HCID 6341EthylamineHCID 79724-MethylmorpholineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 667583453-[Carboxymethyl-(4-chloro-benzyl)-amino]-pyrrolidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 667587503-[(4-Chloro-benzyl)-ethylcarbamoylmethyl-amino]-pyrrolidine-1-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 3-[carboxymethyl-(4-chloro-benzyl)-amino]-pyrrolidine-1-carboxylic acid tert-butyl ester (0.48 g, 1.30 mmol) in tetrahydrofuran (10 mL) was added EDCI (0.39 g, 1.95 mmol), HOBT (0.26 g, 1.95 mmol), and stirred for 30 min., followed by the addition of N-methyl morpholine (0.43 mL, 3.90 mmol) and N-ethyl amine (0.1 mL, 1.95 mmol). The reaction mixture was stirred at room temperature for 18 h. Upon concentration, the residue was dissolved in ethyl acetate and washed with saturated aqueous sodium bicarbonate. The combined organics were washed with brine and dried over sodium sulfate. The crude product was purified on silica using gradient elution from hexane/ethyl acetate (50%) to ethyl acetate (100%).

Workup

  1. stirringThe reaction mixture was stirred at room temperature for 18 h
  2. concentrationUpon concentration
  3. dissolutionthe residue was dissolved in ethyl acetate
  4. washwashed with saturated aqueous sodium bicarbonate
  5. washThe combined organics were washed with brine
  6. dry with materialdried over sodium sulfate
  7. customThe crude product was purified on silica using gradient elution from hexane/ethyl acetate (50%) to ethyl acetate (100%)

Sources & evidence

ORD record
ord-a03bb5326b5d4bf1a9fadcc5bd36844c
Source dataset
uspto-grants-2011_11
Patent number
US08058287B2

Reaction notes

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