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Kimura等曾报道了含有苯并15-冠-5和苯并18-冠-6的双冠醚双酯化合物,并用作钾离子选择电极,其性能优于单冠醚制成的钾离子选择电极.黄德培等报道了4-羟甲苯并-15-冠-5的庚二酸酯(简称双冠醚A)和双冠醚B作为电活性物质的PVC膜钾离子选择性电极,在测量范围,对Na~+,NH_4~+等离子的选择性系数、pH范围等方面均优于以二叔丁基二苯并30-冠-10为活性物质的商品钾电极. 为了更广泛地探索双冠醚化合物的应用前景,本文报道新的双冠醚双酯化合物3a～3f的合成.即以邻苯二酚与ββ’二氯乙醚缩合得二(2-邻羟基苯氧基乙基)醚(1),1与环氧氯丙
Kimura et al. Have reported bis-crown ether diesters containing benzo-15-crown-5 and benzo-18-crown-6 and are useful as potassium ion selective electrodes superior in their performance to potassium ion selective electrodes . Huangde Pei and other reported 4-hydroxy toluene benzo-15-crown-5 pimelate (referred to as double-crown ether A) and double-crown ether B as a membrane active material PVC membrane potassium ion selective electrode in the measurement range, The selectivity coefficient and pH range of Na ~ + and NH_4 ~ + ions are superior to the commercial potassium electrodes with di-tert-butyldibenzo-30-crown-10 as the active substance.In order to explore more widely the double crown ethers In this paper, we report the synthesis of new double crown ether diester compounds 3a ~ 3f by condensation of catechol with ββ’dichloroethyl ether to yield bis (2-o-hydroxy-phenoxyethyl) ether ), 1 with epichlorohydrin