2,5-Dihydroxyterephthalates, 2,5-Dichloro-1,4-benzoquinone-3,6-dicarboxylates, and Polymorphic 2,5-Dichloro-3,6-dihydroxyterephthalates
作者:Keisuke Suzuki、Lukas Hintermann
DOI:10.1055/s-2008-1067145
日期:2008.7
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.
2,5-二羟基环己-1,4-二烯-1,4-二羧酸盐与 1 个等量的 N-氯代丁二酰亚胺反应,可直接生成 2,5-二羟基对苯二甲酸盐;而与 4 个等量的 N-氯代丁二酰亚胺反应,则可生成 2,5-二氯-1,4-苯醌-3,6-二羧酸盐。后一种化合物与连二亚硫酸钠反应生成 2,5-二氯-3,6-二羟基对苯二甲酸盐,可用于研究多晶型相变。