The synthesis and polymerisation of dimethyl 2-vinylterephthalate M1 for possible applications as an anode material in organic secondary batteries are reported. M1 exhibits a vinyl group as a polymerisable unit while the carboxylate moieties serve as cation (Li+, Na+) coordinating sites. The gram-scale synthesis of M1 is described via three different routes in order to evaluate the route with the highest
报道了2-乙烯基对苯二甲酸二甲酯M1的合成和聚合,其可能用作有机二次电池中的阳极材料。M1显示乙烯基作为可聚合单元,而羧酸根部分充当阳离子(Li +,Na +)配位位点。通过三种不同的路线描述了M1的克级合成,以便评估具有最高总产量的路线。此外,研究了用于自由基聚合的不同条件以获得聚合物P1。为了研究在有机电池中使用时将聚合物中的羧酸盐氧化还原活性中心固定化对充电/放电循环稳定性的影响,采用高分子量聚合物。为了合成适合电池研究的材料,将P1后官能化为相应的锂盐P1-Li,然后对其进行电化学研究。循环伏安法测量显示,P1-Li氧化还原活性在0.5–1.2 V相对于Li + / Li的范围内,将其指定为阳极的候选者。在目前的实验条件下,P1-Li的恒电流测量结果显示出64 mA hg -1的比电容。进一步证明,与母体单体(44%)相比,P1-Li显示出改善的循环稳定性,在100次循环后剩余83%的放电容量。
2-Carboxy-(7-,8- and 9-substituted)-5-oxo-5H-dibenzo (a,d) cycloheptenes
申请人:Syntex (U.S.A.) Inc.
公开号:US04041173A1
公开(公告)日:1977-08-09
A compound selected from the group of compounds represented by the formula ##STR1## R is hydrogen, alkyl having 1 to 12 carbon atoms, or ##STR2## where n is an integer of 2 to 4 inclusive and R.sup.4 and R.sup.5 are independently lower alkyl of 1 to 6 carbon atoms inclusive or together R.sup.4 and R.sup.5 and the nitrogen atom to which they are attached form a heterocyclic ring having 5 to 6 total ring atoms; R.sup.1 is at the 7, 8 or 9 position and is halogen, hydroxy, lower alkoxy of 1 to 6 carbon atoms inclusive, or lower alkyl of 1 to 4 carbons atoms, inclusive; The dotted lines may be an additional, optional bond between the carbon atoms at the 10- and 11 positions; and The pharmaceutically acceptable salts thereof. The compounds are used pharmaceutically to treat allergic reactions and autoimmune diseases.