Copper- and Palladium-Catalyzed Amidation Reactions for the Synthesis of Substituted Imidazo[4,5-<i>c</i>]pyridines
作者:Robert J. Wilson、Adam J. Rosenberg、Lauren Kaminsky、Daniel A. Clark
DOI:10.1021/jo500064j
日期:2014.3.7
Imidazo[4,5-c]pyridines were synthesized in three steps utilizing a palladium-catalyzed amidation/cyclization strategy. N-Aryl substrates were synthesized using copper-catalyzed amidation of 3-amino-N-Boc-4-chloropyridine. Complementary protocols for the selective chlorination of imidazo[4,5-c]pyridines at the C2 and C7 positions were also developed.
使用钯催化的酰胺化/环化策略,分三步合成了咪唑并[4,5- c ]吡啶。N-芳基底物是使用铜催化的3-氨基-N - Boc -4-氯吡啶的酰胺化反应合成的。还开发了在C2和C7位置选择性氯化咪唑并[4,5- c ]吡啶的补充方案。