Hydrochloric Acid → 4-{[3-(Trimethoxysilyl)propyl]thio}-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-butanone

Beteiligte Stoffe

Reaktionsschritte

To a stirred solution of α-ionone (1.92 g, 10.0 mmol) and 3-mercaptopropyl-trimethoxysilane (1.96 g, 10.0 mmol) at 12° C. was rapidly added DBU (0.14 ml, 152 mg, 1.0 mmol). The temperature rose to 19° C. and the solution turned orange. After 135 minutes at 20° C, the reaction mixture was poured onto a cold stirred 5% aqueous HCl solution and extracted twice with Et2O. The organic phases were washed (H2O, saturated aqueous NaHCO3 and brine), dried (Na2SO4), filtered and concentrated. The crude extract was dried for 1 hour at 65-70° C./0.01 Torr to give 2.77 g of the title thioether (71%).

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