1: With toluene-4-sulfonic acid; N,N-dimethyl-formamide T=100 - 150°C; 1.16667 h; Inert atmosphere; 2: With oxygen in N,N-dimethyl-formamide 0.333333 h; Cooling with ice;

1: With boron trifluoride diethyl etherate in dichloromethane T=20°C; 1 h; Inert atmosphere; 2: With chloranil in dichloromethane T=20°C; 0.5 h; Inert atmosphere; 3: With triethylamine in dichloromethane T=20°C; 1 h; Inert atmosphere;

1: With boron trifluoride diethyl etherate in dichloromethane T=20°C; 1 h; 2: With air; 2,3-dicyano-5,6-dichloro-p-benzoquinone in dichloromethane T=20°C; 1 h;

1: With boron trifluoride diethyl etherate in dichloromethane T=20°C; 1 h; 2: With air; 2,3-dicyano-5,6-dichloro-p-benzoquinone in dichloromethane T=20°C; 1 h;