Ammonia → HCID 57977430, compound

Participants

Reaction Conditions

Reaction Steps

At room temperature, 15 ml of concentrated aqueous ammonia were added to 4.0 g (10 mmol) of 5-chloro-7-(1,2-dimethylpropylamino)-6-(3-methylthiophen-2-yl)pyrazolo[1,5-α]pyrimidine-3-carbonyl chloride in 30 ml of tetrahydrofuran. The mixture was stirred at 22° C. for 16 hours, and 50 ml of ethyl acetate were then added. The organic phase was separated off, dried over sodium sulphate and concentrated under reduced pressure. This gave 3.0 g of 5-chloro-7-(1,2-dimethyl-propylamino)-6-(3-methylthiophen-2-yl)pyrazolo[1,5-α]pyrimidine-3-carboxamide (logPs=3.5; content according to HPLC: 94%)

Provenance & Evidence