Regiochemistry in the deprotonation of bromopyridines was found to be greatly influenced by the choice of metal amide base, and DA-zincate and TMP-zincate turned out to be excellent complementary practical agents for regioselective metalation of bromopyridines.
Regiocontrolled deprotonative-zincation of bromopyridines using aminozincates
T. Imahori, M. Uchiyama, T. Sakamoto and Y. Kondo, Chem. Commun., 2001, 2450 DOI: 10.1039/B108252N
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