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

HRID 2223939Notes

Reaction equation

HRID 2223939 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.C(N(CC)CC)C.N>CN(C)C=O.O>[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

7

Reactant 4

HCID 222AmmoniaHCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 294936N-((Benzyloxy)carbonyl)-2-methylalanine

Product 1

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

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-benzyloxycarbonylamino-2-methyl-propionic acid (1 g) in N,N-dimethylformamide (10 mL) were added 1-hydroxybenzotriazole (0.63 g), 1-ethyl-3-(3-dimethyl-aminopropyl) 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-5b47b5decee64b749d7ba0be09f52a01
Source dataset
uspto-grants-2008_05
Patent number
US07375113B2

Reaction notes

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