缩合产物 meaning in Chinese
condensation product
Examples
- A facile method for the preparation of 10 - arylmethylene anthrone is reported . when anthrone react with aryl aldehyde in the presence of pyridine by using xylene as the solvent , besides 10 - arylmethylene anthrone derivatives we found other oxygenated anthrone which have not been reported . physical methods shows that the oxygenated anthrone is anthraquinone , and the anthraquinone cannot be removed from the condensed products by recrystallization with solvents . an effective method of getting ride of anthraquinone is sublimation by heating
以蒽酮和芳香醛为原料，二甲苯为溶剂，吡啶催化法制取10 -芳香基甲叉基蒽酮.发现其生成物中除含有目标化合物10 -芳香基甲叉基蒽酮外，还含有部分文献中没有报道的蒽酮氧化物，经物理方法确定其为蒽醌.该化合物不能用溶剂重结晶的方法将其从缩合产物中除去，有效的分离方法是升华 - The traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid . but there is some limits to its use because of its side reaction , strong erosion and liability to pollute the environment . molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene . in addition , several elements of affecting the reaction is researched . it is proved that molybdophosphoric acid is very active as catalyst in less addition , the product yield is quite high and the quality of reuse is quite good
缩醛(酮)合成反应的传统催化剂为无机强酸，但由于副反应多、腐蚀性强和易污染环境等缺点，其使用受到限制.用磷钼酸为催化剂，通过醛(酮)与乙二醇直接反应得到了三种缩合产物.对影响反应的诸因素进行研究,结果表明，用磷钼酸作催化剂，用量小，活性高，产品收率较高，且重复使用性能较好 - Abstract : the traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid . but there is some limits to its use because of its side reaction , strong erosion and liability to pollute the environment . molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene . in addition , several elements of affecting the reaction is researched . it is proved that molybdophosphoric acid is very active as catalyst in less addition , the product yield is quite high and the quality of reuse is quite good
文摘:缩醛(酮)合成反应的传统催化剂为无机强酸，但由于副反应多、腐蚀性强和易污染环境等缺点，其使用受到限制.用磷钼酸为催化剂，通过醛(酮)与乙二醇直接反应得到了三种缩合产物.对影响反应的诸因素进行研究,结果表明，用磷钼酸作催化剂，用量小，活性高，产品收率较高，且重复使用性能较好