1: With potassium hydroxide; 18-crown-6 ether in dichloromethane T=20°C; Horner-Wadsworth-Emmons reaction; 2: With iodine in n-heptane Heating;

1: With potassium hydroxide; 18-crown-6 ether in dichloromethane T=20°C; Honer-Wadsworth-Emmons reaction; 2: With iodine in n-heptane 12 h; Heating; Further stages.;

1: With potassium hydroxide; 18-crown-6 ether in dichloromethane T=20°C; 2: With iodine in n-heptane 12 h; Heating; Further stages.;