Yield:-

Steps:

Multi-step reaction with 3 steps
1.1: sodium hydride / tetrahydrofuran / 0.17 h / 20 °C / Inert atmosphere; Glovebox; Sealed tube
1.2: 16 h / Reflux; Inert atmosphere; Glovebox; Sealed tube
2.1: bis[(trimethylsilyl)methyl](1,5-cyclooctadiene)palladium(II); 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; sodium hydride / 1,4-dioxane / 24 h / 100 °C / Glovebox; Autoclave
3.1: bromine / water / 48 h / 20 °C

References:

Liu, En-Chih;Topczewski, Joseph J. [Journal of Organic Chemistry,2020,vol. 85,# 6,p. 4560 - 4564]