Multi-step reaction with 10 steps
1.1: triphenylphosphine; di-isopropyl azodicarboxylate / tetrahydrofuran / 0.18 h / 10 - 20 °C
2.1: tri-n-butyl-tin hydride; 2,2'-azobis(isobutyronitrile) / benzene / 16 h / Inert atmosphere; Reflux
2.2: 1 h
3.1: hydrogen bromide; acetic acid / 24 h / Reflux
4.1: hydrogen; palladium(II) hydroxide; hydrogenchloride / water; methanol / 48 h / 20 °C
5.1: diisopropylamine / methanol / Reflux
6.1: dmap; triethylamine / chloroform / 16 h / 60 °C
7.1: tris-(dibenzylideneacetone)dipalladium(0); (R)-(-)-1-[(S)-2-(dicyclohexylphosphino)ferrocenyl]ethyl di-t-butylphosphine / toluene / 24 h / 110 °C
8.1: sodium hydroxide / ethanol / 0.5 h / 20 °C
9.1: ethanol / 0.83 h / 0 °C
10.1: hydrogenchloride / water; 1,4-dioxane / 48 h / 20 °C
With
hydrogenchloride; dmap; tris-(dibenzylideneacetone)dipalladium(0); (R)-(-)-1-[(S)-2-(dicyclohexylphosphino)ferrocenyl]ethyl di-t-butylphosphine; 2,2'-azobis(isobutyronitrile); di-isopropyl azodicarboxylate; hydrogen bromide; hydrogen; tri-n-butyl-tin hydride; palladium(II) hydroxide; acetic acid; triethylamine; diisopropylamine; triphenylphosphine; sodium hydroxide;
In
tetrahydrofuran; 1,4-dioxane; methanol; ethanol; chloroform; water; toluene; benzene;
1.1: |Mitsunobu Displacement;
DOI:10.1016/j.bmcl.2017.12.018