Triethylamine → ethyl (2Z)-3-(2-chloropyridin-3-yl)-3-({2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethyl}amino)-2-cyanoacrylate

Participants

Reaction Conditions

Reaction Steps

To a solution of ethyl 3-chloro-3-(2-chloropyridin-3-yl)-2-cyanoacrylate (0.1 g, 0.369 mmol, 1 eq.) in 5 ml of tetrahydrofuran were added 2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethanamine hydrochloride (0.106 g, 0.40 mmol, 1.1 eq.) and triethylamine (TEA) (0.112 g, 1.10 mmol, 3 eq.) at room temperature. After being stirred for 8 h at 80° C., the mixture was evaporated. The residue was diluted with AcOEt and the precipitate was filtered off. The filtrate was evaporated and the residual oil was subjected to column chromatography to give ethyl (2Z)-3-(2-chloropyridin-3-yl)-3-({2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethyl}amino)-2-cyanoacrylate (0.170 g, 99% yield).

Provenance & Evidence