A cycloaddition route to novel triazole boronic esters
作者:Jianhui Huang、Simon J. F. Macdonald、Joseph P. A. Harrity
DOI:10.1039/b817052e
日期:——
The [3 + 2] cycloaddition of alkynylboronates and azides provides a direct route to novel triazole boronicesters, the regioselectivity of this process and functionalisation of the heterocycle products is described.
Alkynylboronates represent useful substrates for the direct synthesis of triazole boronic esters by their thermal cycloaddition with azides. A telescoped cycloaddition-cross-coupling protocol is reported and its employment in the synthesis of a small triazole array is disclosed. (C) 2009 Elsevier Ltd. All rights reserved.