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

HRID 2189345Notes

Reaction equation

HRID 2189345 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 at room temperature 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-e12710dbbdc64e1f886510ef25ad3d05
Source dataset
uspto-grants-2012_12
Patent number
US08324176B2

Reaction notes

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