1: isopropanol acetate With lithium diisopropyl amide in tetrahydrofuran 2: isopropyl 3,3-dimethyl-5-hexenoate in tetrahydrofuran T=25°C;

1.1: aq. LiCl / dimethylsulfoxide / Heating 2.1: LDA / tetrahydrofuran 2.2: 20 percent / tetrahydrofuran / 25 °C View Scheme

1.1: CuCl / tetrahydrofuran 1.2: tetrahydrofuran 2.1: aq. LiCl / dimethylsulfoxide / Heating 3.1: LDA / tetrahydrofuran 3.2: 20 percent / tetrahydrofuran / 25 °C View Scheme