反应详情

A mixture of 0.70 g. of 7-(α,α,α-trifluoro-m-tolyl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid sodium salt, 25 ml. of methylene chloride and 10 ml. of 1 N hydrochloric acid is stirred overnight. The solid which forms is collected by filtration. The filtrate is evaporated to produce more solid. The solids are combined and recrystallized from methylene chloride giving the desired product, m.p. 248°-250° C.

1. additionA mixture of 0.70 g
2. filtrationThe solid which forms is collected by filtration
3. customThe filtrate is evaporated
4. customto produce more solid
5. customrecrystallized from methylene chloride giving the desired product, m.p. 248°-250° C.