Multi-step reaction with 5 steps
1: 1.) HMDS, trimethylchlorosilane, ammonium sulfate, 2.) H2PtCl6, propan-2-ol / 1.) reflux, 5 h, 2.) THF, reflux
2: 62 percent / dimethylformamide / 24 h / 100 - 140 °C
3: 92 percent / diphenyl phosphate / pyridine / 72 h / Ambient temperature
4: 1.) ammonium hydroxide, 2.) potassium carbonate / 1.) dioxane, room temperature, 2.) methanol, room temperature, 12 h
5: 45 percent / trimethylchlorosilane / pyridine / Ambient temperature
With
dihydrogen hexachloroplatinate; ammonium hydroxide; ammonium sulfate; chloro-trimethyl-silane; diphenyl hydrogen phosphate; potassium carbonate; isopropyl alcohol; 1,1,1,3,3,3-hexamethyl-disilazane;
In
pyridine; N,N-dimethyl-formamide;
DOI:10.1021/jo962165p