Multi-step reaction with 8 steps
1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane
2: dmap; triethylamine / dichloromethane / 1 h
3: (bis(tricyclohexyl)phosphine)palladium(II) dichloride; anhydrous dipotassium phosphate / water; toluene / 16 h / 100 °C
4: dihydrogen peroxide / water; acetic acid / 6 h / 80 °C
5: phosphorus(V) oxybromide / toluene / 0.5 h / 80 °C
6: dihydrogen peroxide / water; acetic acid / 80 °C
7: phosphorus(V) oxybromide / toluene / 0.75 h / 100 °C
8: tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene / 1,4-dioxane / 3 h / 80 °C / Inert atmosphere
With
dmap; tris-(dibenzylideneacetone)dipalladium(0); (bis(tricyclohexyl)phosphine)palladium(II) dichloride; anhydrous dipotassium phosphate; oxalyl dichloride; dihydrogen peroxide; caesium carbonate; triethylamine; N,N-dimethyl-formamide; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; phosphorus(V) oxybromide;
In
1,4-dioxane; dichloromethane; water; acetic acid; toluene;
3: Suzuki coupling;
DOI:10.1021/jm1015389