1: o-diphenylphosphanylbenzoic acid 1-cyclohexylallyl ester With dicarbonylacetylacetonato rhodium (I); potassium carbonate in tetrahydrofuran 0.0833333 h; AutoclaveInert atmosphere; 2: carbon monoxide With hydrogen in tetrahydrofuran T=50°C; P=30003 Torr; 24 h; Autoclave; regioselective reaction;

magnesium in diethyl ether 2 h; Heating;