Ammonium Hydroxide → Flupoxam

Participants

Reaction Conditions

Reaction Steps

A 29% ammonia aqueous solution (3.48 kg, 59.2 mol) was added to 47.8 kg of water. 2-phenyl-4,5-oxazoledione 4-[4-chloro-3-(2,2,3,3,3-pentafluoropropoxy)methylphenyl]hydrazone (14.9 kg, purity: 94.4%, water content: 36.5%, 19.4 mol) was added to the solution and the mixture was heated while stirring. After heating at 80° C. for two hours (after three hours after initiation of the heating), the reaction mixture was cooled to 50° C. and filtered by centrifugation. The residue was washed with hot water dried in a hot air drier to obtain 9.0 kg of the target compound.

Provenance & Evidence