1: 6-bromo-2,3,4,7-tetramethylbenzo[b]thiophene With n-butyllithium in diethyl ether; hexane T=0°C; 0.333333 h; 2: With tributoxyborane in diethyl ether; hexane T=-20 - 20°C; 2.16667 h; 3: 1-bromonitrobenzene With palladium diacetate; sodium hydrogencarbonate in water; acetone T=65°C; 1 h;