... Please enable JavaScript to use all the features on this page. Tetrahedron. Volume 58, Issue 17, 22 April 2002, Pages 3323–3328. Cover image Cover image. Synthesis of novel halopyridinylboronic acids and esters. Part 2: 2,4, or 5-Halopyridin-3-yl-boronic acids and esters ☆. ...