Synthesis of fluorine containing arylacetic acids via the Diels-Alder reaction of polyfluorinated cyclohexa-2,4-dienones with acetylenes

Article abstract of DOI:10.1016/S0022-1139(00)80098-6

2,3,4,5,6-Pentafluoro-6-chloro-2,4-cyclohexadien-1-one (I) and 3-(pentafluorophenoxy)-6-chloro-2,4,5,6-tetrafluoro-2,4-cyclohexadien-1-one (II) readily undergo the Diels-Adler reaction with aryl- and alkyl-substituted acetylenes giving <2+4>-cycloadducts