公开(公告)号：US20230151030A1

公开(公告)日：2023-05-18

申请号：US17916197

申请日：2021-04-02

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sambhaji Nanasaheb CHOUGULE ,  Anamitra CHATTERJEE ,  Jaiprakash Brijlal SAINANI ,  Sivalingam GUNASEKARAN ,  Bharatkumar Ravjibhai PAGHADAR

IPC: C07F5/02 ,  C07F17/00 ,  B01J23/44

CPC classification number: C07F5/025 ,  C07F17/00 ,  B01J23/44

Abstract: 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.