Diethyl Malonate → HCID 136387797, compound

Participants

Reaction Steps

A mixture of 4,4,4-trifluoro-N-[4-(2,2,2-trifluoroethoxy)phenyl]butanimidamide (20.9 g), diethyl malonate (20.2 mL), sodium methoxide (10.8 g) and 2-methoxyethanol (400 mL) was heated under reflux overnight, and the reaction mixture was concentrated under reduced pressure. Similarly, a mixture of 4,4,4-trifluoro-N-[4-(2,2,2-trifluoroethoxy)phenyl]butanimidamide (22.6 g), diethyl malonate (21.8 mL), sodium methoxide (11.7 g) and 2-methoxyethanol (400 mL) was heated under reflux overnight, and the reaction mixture was concentrated under reduced pressure. The obtained residues were combined, and partitioned between diethyl ether and water. The aqueous layer was separated, to the organic layer was added 1N hydrochloric acid, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure. The obtained solid was suspended in diisopropyl ether. The precipitate was collected by filtration, washed with diisopropyl ether, and dried to give the title compound (41.6 g) as a solid.

Provenance & Evidence