Dimethylformamide → 8-[3-Fluoro-5-(trifluoromethyl)pyridin-2-yl]-1,4-dioxa-8-azaspiro[4.5]decane

Participants

Reaction Conditions

Reaction Steps

A mixture of 1,4-dioxa-8-azaspiro[4.5]decane (1.76 g), 2-bromo-3-fluoro-5-(trifluoromethyl)-pyridine (2.95 g), N,N-dimethylformamide (50 mL), 1,4-dioxane (75 mL) and triethylamine (5.07 ml) is stirred in a sealed vessel at 120° C. for 1 h. After cooling to room temperature, the mixture is concentrated and partitioned between ethyl acetate (100 mL) and water (100 mL). The water layer is extracted with ethyl acetate (100 mL) and the combined organic layers are dried over Na2SO4, filtered and concentrated to yield the title compound.

Provenance & Evidence