Triphosgene → HCID 57078930, compound

HRID 2304343Notes

Reaction equation

HRID 2304343 reaction equation
Cl.[CH2:2]([O:9][C:10]([C@@H:12]1[CH2:16][CH2:15][CH2:14][N:13]1[C:17](=[O:29])[C@H:18]([NH2:28])[CH2:19][C:20]1[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=1)=[O:11])[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:30]([O-])(O)=[O:31].[Na+].ClC(Cl)(OC(=O)OC(Cl)(Cl)Cl)Cl>ClCCl>[CH2:2]([O:9][C:10]([C@@H:12]1[CH2:16][CH2:15][CH2:14][N:13]1[C:17](=[O:29])[C@H:18]([N:28]=[C:30]=[O:31])[CH2:19][C:20]1[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=1)=[O:11])[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1

Participants

5

Reactant 3

HCID 94429TriphosgeneHCID 516892Sodium BicarbonateHCID 697805921-[2-(R)-Amino-3-(4-methoxyphenyl)-propionyl]-pyrrolidin-2-(S)-carboxylic acid benzyl ester hydrochloride

Product 1

HCID 57078930HCID 57078930, compoundYield 98%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

1-[2-(R)-Amino-3-(4-methoxyphenyl)-propionyl]-pyrrolidine-2-(S)-carboxylic acid benzyl ester hydrochloride (2.8 g) was dissolved in 30 mL of dichloromethane followed by addition of 30 mL of NaHCO3 solution (1M) under vigorous stirring. Triphosgene (0.6 g) in 6 mL of dichloromethane was added at 0° C. and the mixture was kept stirring for 0.25 h. The organic layer was separated and the solvent removed in vacuo to yield 1.20 g (98%) of the title compound as a yellow oil. (+)-APCI-MS: 409 (MH+).

Workup

  1. customThe organic layer was separated
  2. customthe solvent removed in vacuo

Sources & evidence

ORD record
ord-51b0973f426940fb92b8248a5edf94c3
Source dataset
uspto-grants-2002_08
Patent number
US06432955B1

Reaction notes

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