Multi-step reaction with 7 steps
1: zinc; ammonium chloride / methanol / 4 h / 60 °C / Sealed tube
2: 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; N-ethyl-N,N-diisopropylamine / ethyl acetate / 1.08 h / -10 - 20 °C / Inert atmosphere
3: tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidine][benzylidene]ruthenium(II) dichloride; toluene-4-sulfonic acid / dichloromethane / 1.5 h / 40 °C / Inert atmosphere
4: 1,1,1,3',3',3'-hexafluoro-propanol / 1 h / 150 °C / Microwave irradiation
5: potassium carbonate / acetonitrile / 75 °C / Inert atmosphere
6: triethylamine / 1,4-dioxane / 80 - 110 °C / Inert atmosphere
7: rac-cysteine; hydrogenchloride / 1,4-dioxane / 20 - 75 °C / Inert atmosphere
With
tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidine][benzylidene]ruthenium(II) dichloride; hydrogenchloride; rac-cysteine; 1,1,1,3',3',3'-hexafluoro-propanol; potassium carbonate; ammonium chloride; toluene-4-sulfonic acid; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; triethylamine; N-ethyl-N,N-diisopropylamine; zinc;
In
1,4-dioxane; methanol; dichloromethane; ethyl acetate; acetonitrile;