... Synlett 2006(3 ... K 2 CO 3 and 2-[4′-(bromomethyl)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (8) in DMF were allowed to heated at 80 °C for three hours to ... a) Na 2 CO 3 , Pd(PPh 3 ) 4 , toluene, H 2 O, 80 °C, 80%; (b) (i) 1 N NaOH (or p-TsOH), MeOH, reflux; (ii) 3 N NaOH ...