addition of benzyl alcohol onto heteroarenium saltsunder basic conditions was studied. Fine-tuning of the nature of the arenium and substituents allowed the discovery of a range of pyrimidinium substrates that can undergo C6-selective alcohol addition. Crossover experiments were also performed to confirm the addition-elimination equilibriumunder basic conditions.
Synthesis of Imides by Palladium-Catalyzed CH Functionalization of Aldehydes with Secondary Amides
作者:Yong-Jun Bian、Chao-Yue Chen、Zhi-Zhen Huang
DOI:10.1002/chem.201202601
日期:2013.1.14
An efficient palladium‐catalyzed CHfunctionalization of aldehydes with various N‐substituted N‐heteroarene‐2‐carboxamides has been developed for the synthesis of secondaryimides. The reaction tolerates various functionalities, such as methoxy, fluoro, chloro, and bromo groups. A tentative radical mechanism for a PdII/PdIV catalytic cycle is proposed.
已经开发出了一种高效的钯催化的醛用各种N-取代的N-杂芳烃-2-羧酰胺进行的CH官能化反应,以合成仲酰亚胺。该反应容许各种官能团,例如甲氧基,氟,氯和溴基团。提出了Pd II / Pd IV催化循环的暂定自由基机理。