1H-imidazole in N,N-dimethyl-formamide

PhSi(Me)2CH2MgCl; 1,3-bis(2,4,6-trimethylphenyl)imidazolinium chloride; cobalt(II) chloride in tetrahydrofuran; 1,4-dioxane T=25°C; 1.5 h; Inert atmosphere; regioselective reaction;

aluminum oxide in hexane 20 h; Ambient temperatureother tert-butyldimethylsilyl ethers;