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Regiospecific entry to a range of 2-Ph-substituted pyridines. Reaction conditions: (1) Ti-mediated coupling – aldehyde (2 eq), LiHMDS, Et2O, then Ti(Oi-Pr)4, c-C5H9MgCl or n-BuLi, then add Li-alkoxide of allylic alcohol (1 eq); (2) cyclization – HgO, BF3•OEt2, HCl, THF (100 °C).
