Multi-step reaction with 11 steps
1.1: zinc(II) chloride / ethanol; tert-butyl methyl ether / 2 h / 75 - 95 °C / Inert atmosphere
2.1: caesium carbonate / 1-methyl-pyrrolidin-2-one / 20 h / 60 °C
3.1: nitric acid / chloroform / 2.5 h / 0 °C / Cooling with ice
4.1: boron trichloride / dichloromethane / 0.33 h / Cooling with ice; Inert atmosphere
4.2: Cooling with ice
5.1: dmap; triethylamine / dichloromethane / 0.5 h / 0 °C / Inert atmosphere
6.1: potassium fluoride; sodium bromide / tetrakis(triphenylphosphine) palladium(0) / toluene; water / 20 h / Inert atmosphere; Reflux
7.1: hydrogen; [({2-[{5-cyclopropyl-2-(4-fluorophenyl)-3-[(methylamino)carbonyl]-1-benzofuran-6-yl}(methylsulfonyl)amino]ethyl}oxy)methyl]boronic acid / palladium 10% on activated carbon / ethyl acetate / 8 h / 20 °C / 3000.3 Torr
8.1: triethylamine / dichloromethane / 2 h / -15 - 20 °C
9.1: potassium hydroxide; water / ethanol / 1 h / Reflux; Inert atmosphere
10.1: N-ethyl-N,N-diisopropylamine; HATU / N,N-dimethyl-formamide / 0.25 h / 20 °C
10.2: 2 h
11.1: potassium carbonate / acetonitrile / 70 °C / Inert atmosphere
With
dmap; potassium fluoride; [({2-[{5-cyclopropyl-2-(4-fluorophenyl)-3-[(methylamino)carbonyl]-1-benzofuran-6-yl}(methylsulfonyl)amino]ethyl}oxy)methyl]boronic acid; water; hydrogen; nitric acid; boron trichloride; potassium carbonate; caesium carbonate; triethylamine; N-ethyl-N,N-diisopropylamine; HATU; sodium bromide; potassium hydroxide; zinc(II) chloride;
tetrakis(triphenylphosphine) palladium(0); palladium 10% on activated carbon;
In
1-methyl-pyrrolidin-2-one; ethanol; dichloromethane; tert-butyl methyl ether; chloroform; water; ethyl acetate; N,N-dimethyl-formamide; toluene; acetonitrile;