Diisopropylamine → HCID 69005606, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of i-Pr2NH (3.50 equivalents) in THF at 0° C. is added n-BuLi (3.50 equivalents, 2.5 M solution in hexanes). After stirring 15 minutes, the mixture is cooled to −78° C. 4-Bromo-2-fluorophenylamine (2.50 equivalents) is added. After vigorous stirring for 10 minutes, a mixture of the 6-chloro-7-fluoropyrazolo[1,5-a]pyrimidine-5-carboxylic acid (1.00 equivalent) in THF is added. The dry-ice bath is removed after 30 minutes, and the reaction mixture is stirred for 17 hours at room temperature. The reaction mixture is treated with a 10% aqueous HCl solution, extracted with EtOAc, dried (MgSO4), and concentrated. Trituration with methylene chloride give desired product.

Provenance & Evidence