“…50 %) than the couplings in Scheme 2. The synthesis of compound 8 involves the known regiospecific lithiation of 5 at C-5 [22] followed by the standard procedure for the introduction of boronic acid esters. [23] Scheme 4 shows the in situ synthesis of building block 10, the linear extension of terpyr- 4 , toluene, 1m Na 2 CO 3 , reflux, 41.1 %; b) NaSnMe 3 , DME, 0 8C; c) Pd(PPh 3 ) 4 , toluene, reflux, 26.7 %; d) NaSnMe 3 , DME, 0 8C, 61.4 %; e) I 2 , CH 2 Cl 2 , 20 8C, 97.8 %.…”