ORTHO-SUBSTITUTED TRIPTYCENE-BASED DIAMINES, MONOMERS, AND POLYMERS, METHODS OF MAKING AND USES THEREOF
申请人:King Abdullah University of Science and Technology
公开号:US20190062504A1
公开(公告)日:2019-02-28
Described herein are ortho-dimethyl-substituted and tetramethyi-substituted triptycene-containing diamine monomers and microporous triptycene-based poiyimides and poiyamides, and methods of making the monomers and polymers.
A simple two-step synthesis of triptycene di- and tetracarboxylic acids is reported. Diels-Alder reaction between dimethylanthracenes and appropriate arynes, generated in situ from anthranilic or dimethylanthranilic acid, afforded di- or tetramethyl-triptycenes in 41-69% yields. Subsequent oxidation of the methyl groups with potassium permanganate provided the corresponding triptycene carboxylic acids