Potassium Carbonate → 3-(4-Fluorophenoxy)-N-(2-propynyl)-1-azetidinecarboxamide

Participants

Reaction Steps

A mixture of 5.52 g (0.022 mole) of crude 3-(4-fluorophenoxy)-1-azetidine carbonyl chloride and 3 g (0.02 mole) of potassium carbonate in 30 ml of tetrahydrofuran was cooled in an ice bath and while stirring treated with 1.1 g (0.02 mole) of propargylamine added dropwise. After stirring for 5 hr, the reaction mixture was diluted with 250 ml of water and the resulting solid collected by filtration to yield 8.67 g of wet product. Recrystallization from acetone after filtration to remove some amorphous material, gave a tacky solid. A second recrystallization from benzene after treating with charcoal yielded 2.7 g (50%) of beige crystals, m.p. 106°-108° C.

Provenance & Evidence