作者:Peter R. Ashton、Kenneth D. M. Harris、Benson M. Kariuki、Douglas Philp、James M. A. Robinson、Neil Spencer
DOI:10.1039/b104794a
日期:2001.11.1
A diboradiazaaromatic—2,7-di-tert-butyl-5,9-dihydroxy-5,9-dibora-4,10-diazapyrene-4,10-diium-5,9-diuide—which is a structural analogue of isophthalic acid has been designed and synthesised. This compound is capable of spontaneous dehydration in solution to form linear oligoanhydrides. These oligoanhydrides can be readily hydrolysed to the starting diboradiazaaromatic under appropriate conditions. This unusual reactivity is mirrored in the solid-state behaviour of 2,7-di-tert-butyl-5,9-dihydroxy-5,9-dibora-4,10-diazapyrene-4,10-diium-5,9-diuide. A complex network of hydrogen bonds present in the solid-state structure of the borazaaromatic serve to facilitate a facile solid-state dehydration reaction, once again forming oligoanhydrides of molecular weight greater than 3000 Da.
二硼二氮杂芳香族化合物——2,7-二叔丁基-5,9-二羟基-5,9-二硼-4,10-二氮杂芘-4,10-二鎓-5,9-二碘化物——是间苯二甲酸的结构类似物酸已被设计和合成。该化合物能够在溶液中自发脱水形成直链低聚酸酐。这些低聚酸酐在适当的条件下可以容易地水解成起始二硼二氮杂芳族化合物。这种不寻常的反应性反映在2,7-二叔丁基-5,9-二羟基-5,9-dibora-4,10-diazapyrene-4,10-diium-5,9-的固态行为中二聚体。硼氮杂芳烃的固态结构中存在复杂的氢键网络,有助于促进轻松的固态脱水反应,再次形成分子量大于 3000 Da 的低聚酸酐。