Diisopropylethylamine → HCID 59851365, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-(3,4-dimethoxy-phenylamino)-6-oxo-6,7-dihydro-5H-benzo[b]pyrimido[4,5-d]azepine-9-carboxylic acid (I-53) (75 mg, 0.18 mmol) in DMF (5 mL) was added N,N-diisopropylethylamine (0.10 mL, 0.55 mmol), TBTU (65 mg, 0.20 mmol), and tert-butyl 2-aminoethylcarbamate (35.5 mg, 0.22 mmol). The reaction stirred at 22° C. overnight. The reaction mixture was diluted with H2O, and the precipitate that formed was filtered, washed with H2O and dried to give I-71-a [MS m/z═549 (M+H)] which was carried on crude to the deprotection.

Provenance & Evidence