Diisopropylamine → N-[1-cyano-1-methyl-2-(5-cyano-2-{2-chloro-4-trifluoromethoxy-phenoxy}-phenoxy)-ethyl]-4-trifluoromethylsulfanyl-benzamide

Participants

Reaction Steps

21.5 g of 3-(2-amino-2-cyano-2-methyl-ethoxy)-4-(2-chloro-4-trifluoromethoxy-phenoxy)-benzonitrile (described in example 1 step d)) and 11.4 ml of N, N-diisopropylamine are dissolved in 250 ml of dichloromethane and 14.5 g of 4-(trifluoromethylthio)-benzoylchloride are slowly added. The reaction mixture is stirred at room temperature for 20 hours and washed with water, a saturated aqueous solution of sodium bicarbonate and water. The organic phase is dried with magnesium sulfate and evaporated under vacuum. The residue is purified by recrystallization from diethylether/hexanes to yield N-[1-cyano-1-methyl-2-(5-cyano-2-{2-chloro-4-trifluoromethoxy-phenoxy}-phenoxy)-ethyl]-4-trifluoromethylsulfanyl-benzamide as a colorless solid.

Provenance & Evidence