Ir-Catalyzed Borylation of CH Bonds in N-Containing Heterocycles: Regioselectivity in the Synthesis of Heteroaryl Boronate Esters
摘要:
(Chemical Equation Presented) Blocking the way: Substitution at the 2-position in pyridines and other N-heterocycles blocks N-coordination to an Ir center. This steric hindrance provides a substrate-design criterion that allows the Ir-catalyzed borylation of C-H bonds, which can be followed by Suzuki-Miyaura cross-coupling in a one-pot reaction (see scheme; B 2pin2 = bis(pinacolato-O,O′)diboron, dtbpy = 4,4′-tBu2-2,2′-bipyridine).
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DOI:
10.1002/anie.200503047
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年份:
2006
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来源期刊
Angewandte Chemie International Edition
2006/01/09
引用走势
2008
被引量:54
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