1: thien-2-yl bromide With magnesium in diethyl ether; toluene 3 h; Heating; 2: 2,5-dibromo-3,4-diphenylthiophene With [1,3-bis(diphenylphosphino) propane] dichloronickel(II) in diethyl ether Kumada-type cross-coupling reaction; 75 h; Heating;