Abstract
Reaction of 2,5-dihydroxycyclohexa-1,4-diene-1,4-dicarboxylates
with one equivalent of N -chlorosuccinimide
cleanly gives 2,5-dihydroxyterephthalates; reaction with four equivalents
of N -chlorosuccinimide gives 2,5-dichloro-1,4-benzoquinone-3,6-dicarboxylates
instead. The latter compounds react with sodium dithionite to give
2,5-dichloro-3,6-dihydroxyterephthalates, which will find use in the
study of polymorphic phase changes.
Key words
arenes - halogenation - hydroquinones - polymorphism - quinones
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