Hydrazine hydrate (1:1) → HCID 86649765, compound

Participants

Reaction Steps

To a solution of 5.26 g of N-[[4-[5-[3-bromo-5-(trifluoromethyl)phenyl]-5-trifluoromethyl-4,5-dihydroisoxazole-3-yl]-2-chlorophenyl]methyl]phthalimide in 20 mL of ethanol, 0.73 g of a hydrazine monohydrate aqueous solution was added and the resultant mixture was stirred while heating the mixture to reflux for 1 hour. After the completion of the reaction, the reaction mixture was left to be cooled down to room temperature and from the reaction mixture, an insoluble substance was filtered off and the solvent was distilled off under reduced pressure. To the resultant residue, 20 mL of chloroform was added to dissolve the residue and an insoluble substance was filtered off one more time. The resultant filtrate was washed with water (10 mL×1) and then dehydrated and dried over saturated saline and anhydrous sodium sulfate in this order, and the solvent was distilled off under reduced pressure. The resultant residue was purified by silica gel column chromatography eluting with methanol-ethyl acetate (1:9) to obtain 2.87 g of the objective substance as a yellow resinoid.

Provenance & Evidence