Copper-Catalyzed Perkin–Acyl-Mannich Reaction of Acetic Anhydride with Pyridine: Expeditious Entry to Unconventional Piperidines
作者:Stefano Crotti、Francesco Berti、Mauro Pineschi
DOI:10.1021/ol202027k
日期:2011.10.7
A regioselective introduction of a methoxycarbonyl methyl group at the C2 position of unsubstituted pyridine has been accomplished with catalytic amounts of copper(II) triflate in mild reaction conditions. The N-acetyl-1,2-dihydropyridyl aceticacid methyl ester obtained is a valuable building block for the synthesis of new polyfunctionalized piperidine derivatives bearing unconventional substitution