1: With boron trifluoride diethyl etherate in dichloromethane T=20°C; 1 h; 2: With triethylamine; 2,3-dicyano-5,6-dichloro-p-benzoquinone in dichloromethane T=20°C; 1 h; Further stages.;
1: With boron trifluoride diethyl etherate in dichloromethane T=20°C; 1 h; 2: With oxygen; 2,3-dicyano-5,6-dichloro-p-benzoquinone in dichloromethane T=20°C; 1 h; Further stages.;
1: With boron trifluoride diethyl etherate in dichloromethane T=20°C; 1.5 h; 2: With 2,3-dicyano-5,6-dichloro-p-benzoquinone in dichloromethane T=20°C;
1: With boron trifluoride diethyl etherate in dichloromethane T=20°C; 1 h; 2: With 2,3-dicyano-5,6-dichloro-p-benzoquinone in dichloromethane T=20°C; 1 h;
