Acetic Acid → HCID 66758387, compound

HRID 1983781Notes

Reaction equation

HRID 1983781 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) 6: 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-2c695e85c5d04b2bb6c3566e464e3da0
Source dataset
uspto-grants-2009_06
Patent number
US07541365B2

Reaction notes

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