| 摘要 |
PURPOSE:To obtain the titled compound in high selectivity and yield, by decarbonating a carbonate compound in the presence of a catalyst consisting of an alkali metal halide and an alkali metal dihydrogen phosphate. CONSTITUTION:The objective compound can be produced by decarbonating a 1,2-diol carbonate compound such as ethylene carbonate, and a 5-membered ring carbonate prepared by the reaction of various 1,2-diols with phosgene, dimethyl carbonate, etc., at 150-250 deg.C in the presence of a catalyst consisting of an alkali metal halide and an alkali metal dihydrogen phosphate (including anhydride and hydrate). The amounts of the halide and the dihydrogen phosphate are 0.01-10pts. and 0.01-20pts. per 100pts. of the carbonate compound, respectively, in a batch process. An epoxy resin especially suitable for the sealing of integrated circuits and for the production of a monofunctional epoxy diluent can be prepared by this process in high yield. |
