Patent ID: 11969719
Assignee: JILIN UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 4:
5. The preparation method according to claim 1, wherein the second alkali comprises one selected from the group consisting of potassium acetate, sodium carbonate, lithium carbonate and potassium phosphate; the second catalyst comprises [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II); a molar ratio of the dibromo compound:the bis(pinacolato)diboron:the second alkali:the second catalyst is 1:(2-2.5):(5-8):(0.03-0.05); a temperature of the first Suzuki coupling reaction is between 110° C. and 120° C., and a time of the first Suzuki coupling reaction is 12 h.