作者:Alexander Stadler、Henrik von Schenck、Karl S. A. Vallin、Mats Larhed、Anders Hallberg
DOI:10.1002/adsc.200404184
日期:2004.12
Heck vinylations of electron-rich amino-functionalized vinyl ethers were performed with high regioselectivity furnishing moderate to good isolated yields of the corresponding 1-alkoxy-1,3-butadienes. DFT calculations support an amine-palladium(II) coordination strength reactivity/selectivity rationale, where the dimethylamino group was the preferred metal presenting functionality. Controlled microwave
富电子的氨基官能化乙烯基醚的末端螯合控制的Heck乙烯基化反应具有较高的区域选择性,可提供相应的1-烷氧基-1,3-丁二烯中等至良好的分离收率。DFT计算支持胺-钯(II)配位强度反应性/选择性原理,其中二甲基氨基是优选的具有金属官能度的金属。受控的微波加热有效地促进了这些钯催化的反应,并且可以在30分钟内实现完全转化。随后在微波辐射下,与乙炔二羧酸二甲酯发生的Diels-Alder反应,通过消除氨基烷氧基而仅部分芳香化了双环和三环化合物。因此,