作者:Xinzhu Liu、King Kuok Mimi Hii
DOI:10.1002/ejoc.201000384
日期:2010.9
A new "chloride-free" protocol was developed for oxidative amidation reactions between cyclic and acyclic amides and carbamates with activated olefins, conducted under Pd/Cu catalysis, using air as a terminal oxidant. The presence of TsOH is important for catalytic activity. The scope of the reaction includes the addition of primary amides, carbamates, as well as cyclic oxazolidinone and pyrrolidinone
开发了一种新的“无氯”协议,用于环状和无环酰胺与氨基甲酸酯与活化烯烃之间的氧化酰胺化反应,在 Pd/Cu 催化下进行,使用空气作为末端氧化剂。TsOH 的存在对催化活性很重要。反应范围包括伯酰胺、氨基甲酸酯以及环状恶唑烷酮和吡咯烷酮的加入。发现这些反应对 N-亲核试剂的空间需求敏感,并且 E-选择性只能通过环状 N-亲核试剂实现。产物可以很容易地氢化,以高产率得到饱和产物。