1: cycloheptanone With n-butyllithium; diisopropylamine in tetrahydrofuran; hexane T=-78°C; 2: With titanium(IV) isopropylate in tetrahydrofuran; hexane T=-78°C; 3: perfluoromethyl iodide With triethyl borane in tetrahydrofuran; hexane T=-78°C;

Wilkinson's catalyst; diethylzinc in tetrahydrofuran; hexane T=0°C; 6 h;

triethyloxonium tetra-fluoroborate