Ammonia → Phenylmethyl N-(2-amino-1,1-dimethyl-2-oxoethyl)carbamate

HRID 2223583Notes

Reaction equation

HRID 2223583 reaction equation
[CH2:1]([O:8][C:9]([NH:11][C:12]([CH3:17])([CH3:16])[C:13](O)=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.O[N:19]1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C.N>CN(C)C=O.O.C(N(CC)CC)C>[CH2:1]([O:8][C:9]([NH:11][C:12]([CH3:17])([CH3:16])[C:13]([NH2:19])=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

8

Reactant 4

HCID 222AmmoniaHCID 757711-HydroxybenzotriazoleHCID 294936N-((Benzyloxy)carbonyl)-2-methylalanineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride

Product 1

HCID 17898707Phenylmethyl N-(2-amino-1,1-dimethyl-2-oxoethyl)carbamateYield 26.1%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

To a solution of 2-benzyloxycarbonylamino-2-methylpropionic acid (1 g) in N,N-dimethylformamide (10 mL) were added 1-hydroxybenzotriazole (0.63 g), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (1.21 g), triethylamine (1.76 mL) and 28% aqueous ammonia solution (2 mL), and the mixture was stirred at room temperature overnight. The reaction mixture was poured into water, and the resulting mixture was extracted with ethyl acetate. The organic layer was washed with 0.5 mol/L hydrochloric acid, water, 1 mol/L aqueous sodium hydroxide solution, water and brine successively, and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure to give 2-benzyloxycarbonylamino-2-methylpropionamide (0.26 g). This material was dissolved in methanol (5 mL). To the solution was added 10% palladium-carbon powder (30 mg), and the mixture was stirred under a hydrogen atmosphere for 3 hours. The insoluble material was removed by filtration, and the filtrate was concentrated under reduced pressure to give the title compound (0.11 g).

Workup

  1. extractionthe resulting mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with 0.5 mol/L hydrochloric acid, water, 1 mol/L aqueous sodium hydroxide solution, water and brine successively
  3. dry with materialdried over anhydrous sodium sulfate
  4. customThe solvent was removed under reduced pressure

Sources & evidence

ORD record
ord-6c13e504aef44ca2a5c60da02177e6b3
Source dataset
uspto-grants-2008_05
Patent number
US07375087B2

Reaction notes

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