以下为句子列表：
英文: For instance, in the above case the methyl ethyl phenylmalonate may be accompanied by the products formed by ester-interchange reactions, namely the dimethyl and diethyl phenylmalonates.
中文: 比如在上面的例子中，甲基乙基苯基丙二酸酯伴随有酯交换反应形成的产品，也就是二甲基苯基丙二酸酯和二乙基苯基丙二酸酯。
更详细...
英文: It is also known that sodium ethylate and diethyl phenylmalonate interact together to give ethyl Phenylacetate and diethyl carbonate.
中文: 众所周知，乙醇纳和二乙基苯基丙二酸酯反应可以得到乙基乙酸苯酯和二乙基碳酸酯。
更详细...
英文: This method, however, involves using a large excess of diethyl carbonate (for example, 4-8 mols.); it also involves preparing sodium ethylate by dissolving sodium metal in ethanol, which process must be carried out very slowly and carefully if it is to be
中文: 但是这一方法涉及到使用大量过量的二乙基碳酸酯（例如，4-8摩尔）；同时也涉及到在乙醇中溶解纳来制备乙醇纳的反应，这个过程必须非常缓慢小心地进行，如果在工业生产级别上是用这一方法就比较麻烦了。
更详细...
英文: This paper discussed the material of equipmen t which was used to prepare diethyl oxalate by CO coupling-regeneration reactio n wi th the method of weight.The seven kinds of metal material,such as 306,314L,316L ,Zr,Ti(2),Ti(10),1Cr18Ni9Ti and one kind non
中文: 进一步认识发展散装水泥的重要性和紧迫性发展散装水泥是一项节约资源,保护环境的重要经济技术措施,具有良好的经济效益、环境效益和社会效益.据测算,每使用1万吨散装水泥与袋装水泥相比,可节约木材330立方米、电7.2万度、烧碱22吨、煤78吨、棉线约4吨、减少水泥损失450吨.我国目前是世界第一水泥生产大国,年产水泥5亿多吨,而散装率不到20%,这远不能适应社会和经济的发展.为此国家提出了限制袋装、鼓励散装的发展方针.
更详细...
英文: We have now found that if the reaction is carried out in presence of a hydrocarbon which boils above 100°C, for example toluene, then much or all of the excess of the expensive diethyl carbonate can be replaced by the hydrocarbon.
中文: 我们现在发现如果反应在一种沸点在一百摄氏度以上的碳氢化合物中，例如甲苯中进行，那么大部分或者全部的过量的昂贵的二乙基碳酸酯就可以被碳氢化合物所取代。
更详细...
|
