Maleic Anhydride → HCID 14181821, compound

Participants

Reaction Conditions

Reaction Steps

29.4 g. (0.3 mole) maleic acid anhydride were dissolved in 300 ml. toluene and a solution of 33.3 g. (0.3 mole) 4-fluoroaniline in 100 ml. toluene added thereto at 30° C. The hemi-anilide rapidly precipitated out. For the completion of the reaction, the mixture was heated for 2 hours to 100° C., then cooled, the precipitated product filtered off, washed and dried. The yield of hemi-anilide was quantitative. The hemianilide was suspended in acetic acid ethyl ester and 43 g. (0.35 mole) acetyl bromide added thereto. The reaction was carried out by stirring at 30° C. (2 hrs.) and by subsequent 2 hours heating to reflux, thereafter the solvent was distilled off and the residue crystallised. The yield amounted to 69.2 g. (corresponding to 85.5% of theory). The product displayed a melting point of 154° C.

Provenance & Evidence