Selective deprotection and amidation of 2-pyridyl esters via N-methylation
作者:Shinji Yamada、Misato Abe
DOI:10.1016/j.tet.2010.09.016
日期:2010.11
The 2-pyridyl residue serves as a protecting group for various carboxylic acids. The protecting group is selectively cleaved under mild conditions via N-methylation of the pyridyl group. During the deprotection process, the various functional groups as well as the other ester moieties remain intact. The N-methylated active esters can be subsequently transformed into amides. (C) 2010 Elsevier Ltd. All rights reserved.