Potassium Carbonate → N-Methyl-N-(2-propynyl)-3-[3-(trifluoromethyl)phenoxy]-1-azetidinecarboxamide

Participants

Reaction Conditions

Reaction Steps

A mixture of 5.6 g (0.02 mole) of 1-chlorocarbonyl-3-[3-(trifluoromethyl)phenoxy]azetidine and 3 g (0.022 mole) of potassium carbonate in 50 ml of tetrahydrofuran was treated while stirring with 1.52 g of N-methylpropargylamine. After stirring for 15 min. 10 g of ice was added and stirring continued for an additional 72 hr. The tetrahydrofuran was decanted from the salt paste and concentrated on a rotary evaporator to yield an amber oil, 5.9 g. This oil solidified when cooled to -70° C. and was recrystallized from hexane to yield 4.6 g (74.2%) of fine white crystals, m.p. 71°-73° C.

Provenance & Evidence