Selective monolithiation of dibromobiaryls, such as 2, 2′-dibromobiphenyl, 4, 4′- dibromobiphenyl, 2, 7-dibromo-9, 9-dioctylfluorene, 2, 2′-dibromo-1, 1′-binaphthyl, and 5, 5′-dibromo-2, 2′-bithiophene, with 1 equiv of n-butyllithium followed by the reaction with
