Acetic Acid → HCID 66758387, compound

HRID 457198Notes

Reaction equation

HRID 457198 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH:10]([NH:13][CH2:14][C:15](=[O:17])[NH2:16])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:18][C:19]1[CH:26]=[CH:25][C:22]([CH:23]=O)=[CH:21][CH:20]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(O)(=O)C>ClC(Cl)C>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][CH:10]([N:13]([CH2:14][C:15](=[O:17])[NH2:16])[CH2:23][C:22]2[CH:25]=[CH:26][C:19]([Cl:18])=[CH:20][CH:21]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 77264-ChlorobenzaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 667584463-(Carbamoylmethyl-amino)-pyrrolidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 66758387HCID 66758387, compound

Reagents, catalysts & solvents 1

HCID 63651,1-DichloroethaneSolvent

Procedure

To a solution of 3-(carbamoylmethyl-amino)-pyrrolidine-1-carboxylic acid tert-butyl ester (0.49 g, 2.03 mmol) in dichloroethane (5.0 mL) was added 4-chlorobenzaldehyde 0.34 g, 2.44 mmol), sodium triacetoxy borohydride (0.86 g, 4.06 mmol) and catalytic acetic acid and the resulting mixture was stirred at room temperature overnight. The reaction mixture was concentrated, dissolved in dichloromethane and washed with 10% aqueous sodium bicarbonate. The combined organics were washed with brine and dried over sodium sulfate. The crude product was purified on silica using ethyl acetate. 1H-NMR (CDCl3) δ: 1.50 (9H, s), 1.60–1.80 (2H, m), 2.10 (1H, m), 3.10–3.60 (8H, m), 5.65 (1H, br, s), 6.90 (1H, br, s) 7.20–7.40 (4H, m). ESI-MS m/z: 367(M+1), UV retention time: 1.94 min.

Workup

  1. concentrationThe reaction mixture was concentrated
  2. dissolutiondissolved in dichloromethane
  3. washwashed with 10% aqueous sodium bicarbonate
  4. washThe combined organics were washed with brine
  5. dry with materialdried over sodium sulfate
  6. customThe crude product was purified on silica

Sources & evidence

ORD record
ord-4e9c5c52493c48bbac4bf7435442cd19
Source dataset
uspto-grants-2007_03
Patent number
US07186729B2

Reaction notes

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