Palladium-Based Nanocatalyst for One-Pot Synthesis of Polysubstituted Quinolines
作者:Benjamin Wei Jie Chen、Leng Leng Chng、Jun Yang、Yifeng Wei、Jinhua Yang、Jackie Y. Ying
DOI:10.1002/cctc.201200496
日期:2013.1
The synthesis of quinolines has been achieved through a one‐pot, two‐step tandem reaction catalyzed with AgPd alloy nanoparticles supported on carbon. AgPd alloy nanoparticles catalyzed the coupling of a ketone with a primary alcohol through a hydrogen autotransfer process, which yields α‐alkylated ketones under an Ar flow. These are reacted with 2‐aminobenzyl alcohols in a modified Friedländer synthesis
the synthesis of functionalized quinolines from 2-aminobenzyl alcohols with α,β-unsaturated ketones. This method exhibits tolerance to various functional groups and high efficiency, is environmentally benign, and can be performed on a gram scale. Control experiments suggest that this transformation is accomplished by iridium complex catalyzed transferhydrogenation, which is then followed by Friedländer
A new protocol for the direct synthesis of quinolinesfrom enones and 2-aminobenzyl alcohols via iridium-catalyzed transfer hydrogenative reactions has been demonstrated. This method employs easily available [IrCp*Cl2]2/t-BuOK as the efficient catalyst system, proceeding with the merits of high step- and atom efficiency, mild reaction conditions and operational simplicity. The experimental studies
已经证明了通过铱催化的转移氢化反应由烯酮和2-氨基苄醇直接合成喹啉的新方案。该方法采用易于获得的[IrCp * Cl 2 ] 2 / t -BuOK作为有效的催化剂体系,具有步骤和原子效率高,反应条件温和和操作简便的优点。实验研究表明,该反应从转移氢化开始,然后进行弗里德兰德反应,得到最终产物。