The invention relates to a process for preparing a boronic anhydride compound of formula (1), wherein, R1 - R4 are substituents as defined in the disclosure and 'B' stands for the element boron. The invention also describes a process of using the boronic anhydride of formula (1), to prepare a biphenyl metallocene complex of formula (4), wherein, R1 to R10, are substituents as defined in the disclosure; and wherein 'M' is a transition metal element, 'Q' is an halide anion, and 'P' is the valency of the transition metal element 'M' and indicates the number of halide anion present. In addition, the invention further describes a process of purifying the metallocene complex of formula (4) so as to render the overall metallocene complex synthesis process environmentally sustainable as well as cost effective by minimizing waste effluents.
本发明涉及制备式(1)的
硼酸酐化合物的过程,其中R1-R4是如本说明书所定义的取代基,'B'代表
硼元素。本发明还描述了使用式(1)的
硼酸酐来制备式(4)的
联苯基
金属茂配合物的过程,其中R1至R10是如本说明书所定义的取代基;'M'是过渡
金属元素,'Q'是卤素阴离子,'P'是过渡
金属元素'M'的价数,并表示存在的卤素阴离子的数量。此外,本发明还描述了纯化式(4)的茂配合物的过程,以使整个茂配合物合成过程在环境可持续和成本效益方面最大程度地减少废
水排放。