Multi-step reaction with 8 steps
1.1: (S)-Mandelic acid / isopropyl alcohol; ethanol / 26 h / 30 - 60 °C
1.2: 1 h / 20 °C
2.1: palladium diacetate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; sodium t-butanolate / toluene / 3 h / 110 °C / Inert atmosphere
3.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 4.5 h / 0 - 20 °C
4.1: triethylamine / dichloromethane / 2 h / 0 °C
5.1: 2'-(di-tert-butylphosphanyl)-N,N-dimethyl-[1,1'-biphenyl]-2-amine; caesium carbonate; tris-(dibenzylideneacetone)dipalladium(0) / triethylamine / 18 h / 100 °C / Inert atmosphere
6.1: formic acid; water / 18 h / 60 °C
7.1: sodium tris(acetoxy)borohydride / 1,2-dichloro-ethane / 4 h / 80 °C
8.1: trifluoroacetic acid / dichloromethane / 0.5 h / 20 °C
With
tris-(dibenzylideneacetone)dipalladium(0); formic acid; (S)-Mandelic acid; tetrabutyl ammonium fluoride; water; palladium diacetate; sodium tris(acetoxy)borohydride; caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; triethylamine; trifluoroacetic acid; 2'-(di-tert-butylphosphanyl)-N,N-dimethyl-[1,1'-biphenyl]-2-amine; sodium t-butanolate;
In
tetrahydrofuran; ethanol; dichloromethane; 1,2-dichloro-ethane; triethylamine; isopropyl alcohol; toluene;