Multi-step reaction with 4 steps
1.1: potassium hydroxide / acetone / 16 h / 20 °C
2.1: [N-[(1R,2R)-2-(amino-κN)-1,2-diphenylethyl]-4-methylbenzenesulfonamidato-κN]chloro[(1,2, 3,4,5,6-η)-1-methyl-4-(1-methylethyl)benzene]-ruthenium; formic acid; triethylamine / 96 h / 20 °C / Inert atmosphere
3.1: triethylamine / dichloromethane / 48 h / Reflux
4.1: N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium / diethyl ether; hexane / 0.25 h / -78 °C / Inert atmosphere
4.2: 1 h / -78 °C / Inert atmosphere
With
formic acid; [N-[(1R,2R)-2-(amino-κN)-1,2-diphenylethyl]-4-methylbenzenesulfonamidato-κN]chloro[(1,2, 3,4,5,6-η)-1-methyl-4-(1-methylethyl)benzene]-ruthenium; N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium; triethylamine; potassium hydroxide;
In
diethyl ether; hexane; dichloromethane; acetone;
DOI:10.1016/j.tet.2012.05.095