Synthesis of novel halopyridinylboronic acids and esters. Part 4: Halopyridin-2-yl-boronic acids and esters are stable, crystalline partners for classical Suzuki cross-coupling
摘要：
This paper describes a general method for the synthesis and isolation of stable 5, or 6-halopyridin-2-yl-boronic acids and esters. Two methods are carried out using Halogen–metal exchange (HMe) followed by either in situ transesterification, or isolation of the crude boronic acid followed by room temperature esterification.
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DOI：
10.1016/j.tet.2003.10.020
被引量：
年份：
2003
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