Recyclable Selective Palladium-Catalyzed Synthesis of Five-, Six- or Seven-Membered Ring Lactones and Lactams by Cyclocarbonylation in Ionic Liquids
作者:Fangguo Ye、Howard Alper
DOI:10.1002/adsc.200606100
日期:2006.9
ionic liquids, BMIM PF6 or BMIM NTf2, are used successfully for the palladium-catalyzed cyclocarbonylation of 2-allylphenols and anilines, 2-vinylphenols, and 2-aminostyrenes. The reaction proceeds cleanly and efficiently to afford high yields of lactones or lactams with good or excellent selectivity for one isomer. The ionic liquid containing the palladium catalyst, and ligand, is recyclable in all cases
离子液体BMIM PF 6或BMIM NTf 2已成功用于2-烯丙基苯酚和苯胺,2-乙烯基苯酚和2-氨基苯乙烯的钯催化环羰基化。反应干净,有效地进行,以高产率获得内酯或内酰胺,并且对一种异构体具有良好或优异的选择性。包含钯催化剂和配体的离子液体在所有情况下都是可回收的。