Diisopropylethylamine → HCID 21068458, compound

Participants

Reaction Conditions

Reaction Steps

3-Bromo-7-chloro-5-(2-chlorophenyl)pyrazolo[1,5-a]pyrimidine (300 mg, 0.875 mmoles) (prepared as described in Preparative Example 129) was dissolved in anhydrous 1,4-dioxane (6.8 mL). 4-(aminomethyl)piperidine-1-carboxylic acid tert-butyl ester (225 mg, 1.05 mmoles) and diisopropyl ethylamine (0.3055 mL, 1.75 mmoles) were added and the mixture was heated at 75° C. for 24 h. The solution was evaporated to dryness and the residue was chromatographed on a silica gel column (15×5 cm) using dichloromethane as the eluant to give 4-{[3-bromo-5-(2-chlorophenyl)pyrazolo[1,5-a]pyrimidin-7-ylamino]methyl}piperidine-1-carboxylic acid tert-butyl ester (461.2 mg, 100%):

Provenance & Evidence