1: 1-buten-4-yl-benzene With ozone in dichloromethane T=-78°C; ozonolysis; 2: 1,1-dibromomethane With diethylamine T=55°C; Ring cleavage; methylenation; 0.8 h;
1: 1-buten-4-yl-benzene With ozone in dichloromethane T=-78°C; ozonolysis; 2: diiodomethane With diethylamine in dichloromethane T=55°C; Ring cleavage; methylenation; 3 h;
1: 1-buten-4-yl-benzene With ozone in dichloromethane T=-78°C; ozonolysis; 2: dichloromethane With diethylamine Ring cleavage; methylenation; 24 h; Heating;
