Acidic ionic liquids catalyzed one-pot, pseudo five-component, and diastereoselective synthesis of highly functionalized piperidine derivatives
作者:Hamid Reza Shaterian、Kobra Azizi
DOI:10.1016/j.molliq.2013.01.020
日期:2013.4
An efficient and one-pot quantitative procedure for the preparation of functionalized piperidine derivatives from pseudo five-component reactions of aromatic aldehydes, substituted anilines, and ethyl/methyl acetoacetate (molar ratio: 2/2/1) in the presence of acidic ionic liquids such as 1-methylimidazolium hydrogen sulfate ([Hmim]HSO4), 1,1,3,3-tetramethylguanidinium perchlorate ([TMG]ClO4), and
在酸性离子液体存在下,由芳香醛,取代的苯胺和乙酸乙酯/乙酰乙酸甲酯(摩尔比:2/2/1)的假五组分反应制备官能化哌啶衍生物的高效一锅法定量程序例如硫酸1-甲基咪唑鎓硫酸氢盐([Hmim] HSO 4),高氯酸1,1,3,3-四甲基胍盐([TMG] ClO 4)和三氟乙酸1,1,3,3-四甲基胍盐([TMG] TFA)随着催化剂的发展。离子液体在反应过程中是稳定的,也可以重复使用几次,而不会显着降低其活性。