Capillary electrophoresis (CE) can separate charged and neutral substances with high speed and efficiency. In this paper, utilizing meso-octamethylcalix [4]pyrrole, meso-tetraspirocyclohexylcalix[4]pyrrole, bimethyl bi(2-pyrryl)-methane and 1,1-bi(2-pyrryl)cyclohexane as additives in capillary zone electrophoresis (CZE) electrolyte, their recognition ability to inorganic anions was discussed. The dipyrrylmethanes have better recognition ability than others. Their effects on separation of seven normal inorganic anions by CZE were studied.

Through lithiation and electrophilic substitution of three calix [4]pyrroles, a series of new calix[4]pyrrole derivatives were synthesised. The derivatives were hydrolysed to produce acids and, under base catalysis, new esters were formed. Thus calix [4]pyrroles with an active functional group were obtained. The optimum reaction and purification conditions were investigated. The binding properties of the new derivatives with anions was examined.

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