Diisopropylethylamine → HCID 86621913, compound

Participants

Reaction Steps

A solution of 70.0 mg (0.19 mmol) 2-hydroxy-2-((S)-6-oxo-6,7-dihydro-5H-dibenzo[b,d]azepin-7-ylcarbamoyl)-pentanoic acid and 31.3 mg (0.21 mmol) 3,3,3-trifluoropropylamine hydrochloride in 3 ml tetrahydrofuran were cooled to 0° C. and 28.2 mg (0.21 mmol) 1-hydroxy-benzotriazole hydrate, 103 μl (0.61 mmol) diisopropylethylamine and 40.1 mg (0.21 mmol) N-(3-dimethylaminopropyl)-N′-ethyl-carbodiimide hydrochloride were added. Stirring was continued overnight. Removal of the solvent by distillation and chromatography on silicagel with heptane/ethylacetate (gradient 90:10 to 50:50) yielded 50.0 mg (57%) (R/S)-2-hydroxy-N-((S)-6-oxo-6,7-dihydro-5H-dibenzo[b,d]azepin-7-yl)-2-propyl-N-(3,3,3-trifluoro-propyl)-malonamide: MS (m/e): 464.0 (M+H)+.

Provenance & Evidence