1: in tetrahydrofuran T=0°C; Stork-Danheiser alkylation; 0.75 h; 2: With hydrogenchloride in tetrahydrofuran T=0 - 20°C;

1: 3-(2-methylpropoxy)cyclohex-2-en-1-one With lithium diisopropyl amide in tetrahydrofuran T=-78 - 20°C; 2: benzyl bromide in tetrahydrofuran T=-78 - 20°C; Further stages.;