作者:Leigh Ford、Farzad Atefi、Robert D. Singer、Peter J. Scammells
DOI:10.1002/ejoc.201001468
日期:2011.2
tetraalkylphosphonium (19) ionic liquids which possess ether functionality were prepared and evaluated as solvents and co-solvents for Grignard reactions. Interestingly, reduction of the starting aldehydes to the corresponding primary alcohol was the favored pathway when reactions were conducted in pyridinium ILs 10a, b in the absence an ethereal co-solvent. However, the same reactions in the phosphonium IL 19 afforded
制备了具有醚官能团的烷基吡啶鎓(10a,R = Me 和 10b,R = Et)和四烷基鏻(19)离子液体,并评估它们作为格氏反应的溶剂和共溶剂。有趣的是,当在吡啶 IL 10a、b 中进行反应时,在没有醚共溶剂的情况下,将起始醛还原为相应的伯醇是有利的途径。然而,在乙醚作为共溶剂存在的情况下,在鏻 IL 19 中的相同反应以良好的产率提供了预期的格氏产品。