Multi-step reaction with 8 steps
1.1: 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione; sulfuric acid / 5 h / 20 °C
1.2: Cooling
2.1: sodium carbonate / N,N-dimethyl-formamide / 8 h / 60 °C
3.1: ammonium chloride; iron / ethanol; water / 1 h / 90 °C
4.1: acetic acid / methanol / 2 h / 20 °C
4.2: 16 h / 20 °C
5.1: caesium carbonate / acetonitrile / 12 h / 80 °C
6.1: caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl / tris-(dibenzylideneacetone)dipalladium(0) / toluene / 8 h / 100 °C / Inert atmosphere
7.1: sodium hydroxide; water / methanol / 1 h / 60 °C
7.2: pH 4 - 6
8.1: dimethyl sulfoxide / 0.25 h / 20 °C
With
1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione; sulfuric acid; water; iron; sodium carbonate; ammonium chloride; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; acetic acid; sodium hydroxide;
tris-(dibenzylideneacetone)dipalladium(0);
In
methanol; ethanol; water; dimethyl sulfoxide; N,N-dimethyl-formamide; toluene; acetonitrile;