The formation of halogenated succinates by liquid-phase direct fluorination with elemental fluorine
作者:Robert G. Syvret、Daniel L. Vassilaros、David M. Parees、Guido P. Pez
DOI:10.1016/0022-1139(93)02975-k
日期:1994.6
Direct fluorination of maleic anhydride with elemental fluorine has been investigated in different solvents at low temperatures. It was discovered that the net conversion of maleic anhydride, as well as the overall yield and composition of the halogenated products, depend strongly on the experimental conditions employed. Fluorinations conducted in fluorotrichloromethane, chloroform or mixtures thereof
已经在低温下在不同溶剂中研究了马来酸酐与元素氟的直接氟化。已经发现,马来酸酐的净转化率以及卤代产物的总产率和组成在很大程度上取决于所采用的实验条件。在氟化钠存在下,在氟代三氯甲烷,氯仿或它们的混合物中进行的氟化反应可产生高产率的卤代琥珀酸衍生物:主要产物为2,3-二卤代琥珀酸。在0°C和-25°C下进行的实验之间以及在纯CHCl 3和CFCl 3 / CHCl 3中进行的实验之间,产物分布差异很大混合物。提供了有关卤素添加的立体选择性的实验细节和一些评论。