Palladium-Catalyzed Conjugate Addition to Electron-Deficient Alkynes with Benzenesulfinic Acid Derived from 1,2-Bis(phenylsulfonyl)ethane: Selective Synthesis of (<i>E</i>)-Vinyl Sulfones
作者:Ren-Jie Song、Yu Liu、Yan-Yun Liu、Jin-Heng Li
DOI:10.1021/jo102359n
日期:2011.2.4
A new, selective method for the synthesis of (E)-vinyl sulfones is presence by palladium-catalyzed C−S bond cleavage/conjugate addition. In the presence of Pd(OAc)2 and DMEDA (N1,N2-dimethylethane-1,2-diamine), 1,2-bis(phenylsulfonyl)ethane underwent the C−S bond cleavage, followed by conjugate addition to numerous electron-deficient alkynes afforded the corresponding (E)-vinyl sulfones in moderate
一种新的,选择性的合成(E)-乙烯基砜的方法是通过钯催化的CS键裂解/结合物的添加而存在。在Pd(OAc)2和DMEDA(N 1,N 2-二甲基乙烷-1,2-二胺)的存在下,1,2-双(苯磺酰基)乙烷进行了C-S键裂解,随后共轭加成缺电子的炔烃以中等至良好的产率提供了相应的(E)-乙烯基砜。