1H-imidazole in N,N-dimethyl-formamide T=0 - 20°C; silylation;

1: 98 percent / diethyl ether / 0.5 h 2: imidazole / dimethylformamide / 0 - 20 °C View Scheme

α-[2-(2-butoxyethoxy)ethoxy]-4,5-methylenedioxy-2-propyltoluene; tetrabutylammomium bromide; sodium hydrogencarbonate 1.) DMF, 1.5 h, RT; 2.) AcOEt; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;