期刊
TETRAHEDRON LETTERS
卷 46, 期 10, 页码 1671-1674出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2005.01.064
关键词
palladium-catalyzed borylation; bis(neopentyl glycolato)diboron; ortho-arylboronic acids
Boronic acids are important intermediates and molecular recognition moieties in a wide variety of applications. In our research, we have found that the synthesis of ortho-substituted arylboronic acids is problematic with the commonly used bis(pinacolato)diboron in palladium-mediated borylation reactions. As a substitute, we have found that bis(neopentyl glycolato)diboron is a much more efficient borylation agent for the synthesis of sterically hindered ortho-substituted arylboronic acids. (C) 2005 Elsevier Ltd. All rights reserved.
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