Triethylamine → [1-(2-Benzylamino-5-methyl-phenylcarbamoyl)-2-methyl-propyl]carbamic acid tert-butyl ester

Participants

Role	Name	HCID	Charge
Reactant	Triethylamine	HCID 8471	—
Reactant	(2R)-2-(((tert-butoxy)carbonyl)amino)-3-methylbutanoic acid	HCID 637605	—
Reactant	O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate	HCID 2733207	—
Reactant	[1-(2-Benzylamino-5-bromo-phenylcarbamoyl)-2-methyl-propyl]-carbamic acid tert-butyl ester	HCID 68558928	—
Solvent	Dimethylformamide	HCID 6228	—
Solvent	Ethyl Acetate	HCID 8857	—
Product	[1-(2-Benzylamino-5-methyl-phenylcarbamoyl)-2-methyl-propyl]carbamic acid tert-butyl ester	HCID 66886932	—

Reaction Steps

To a solution of [1-(2-benzylamino-5-bromo-phenylcarbamoyl)-2-methyl-propyl]-carbamic acid tert-butyl ester (250 mg, 0.9 mmol) and triethylamine (0.19 ml, 1.35 mmol) in dry DMF (5 ml), was added Boc-D-valine (290 mg, 1.35 mmol) followed by TBTU (290 mg, 0.9 mmol,). The reaction mixture was stirred at room temperature overnight. Ethyl acetate was added. The organic layer was washed with saturated NaHCO3, dried over MgSO4, filtered, and the filtrated was concentrated in vacuo. The crude material was purified by flash chromatography to yield [1-(2-Benzylamino-5-methyl-phenylcarbamoyl)-2-methyl-propyl]-carbamic acid tert-butyl ester.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US07662581B1
Source dataset	uspto-grants-2010_02
ORD ID	ord-a3720bfb3d094bc0bbe0aeacbd661c38
Source note	uspto-grants-2010_02