Hexahydrophthalic anhydride → 1H-Isoindole-1,3(2H)-dione, 2-(4-chloro-2-fluorophenyl)hexahydro-

Participants

Reaction Steps

9.44 Parts of 4-chloro-2-fluoroaniline were then added to a solution of 10 parts of cyclohexane-1,2-dicarboxylic anhydride in 75 parts of glacial acetic acid. After refluxing for 6 hours, the reaction mixture was poured into 200 parts of ice. The resulting crystals were filtered and recrystallized from 70 parts of methanol at -40° C to yield 12.4 parts of white crystals of 2-(4-chloro-2-fluorophenyl)-3a,4,5,6,7,7a-hexahydro-1H-isoindole-1,3(2H)dione melting at 94°-95.5° C.

Provenance & Evidence