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 acetic acid methyl ester obtained is a valuable building block for the synthesis of new polyfunctionalized piperidine derivatives bearing unconventional substitution
在温和的反应条件下,用催化量的
三氟甲磺酸铜(II)已经完成了在未取代
吡啶的C 2位上的甲氧基羰基甲基的区域选择性引入。所获得的N-乙酰基-1,2-
二氢吡啶基
乙酸甲酯是合成具有非常规取代模式的新型多官能化
哌啶衍
生物的重要组成部分。