Palladium-Catalyzed Dimerization of Conjugated Diynes: Synthesis of (<i>E</i>)-1,2-Divinyldiethynylethenes Having Donor and Acceptor Chromophores at the Terminus of Alkyne
作者:Nirmal K. Pahadi、Draxel H. Camacho、Itaru Nakamura、Yoshinori Yamamoto
DOI:10.1021/jo052262v
日期:2006.2.1
es (DVDEEs) having donor and acceptor chromophores at the terminals of alkyne unit 7‘ were synthesized by the palladium/HOAc-catalyzed dimerization of the conjugated diynes 8 bearing an Si group at the terminus of alkyne (R1 position), followed by desilylation and subsequent Sonogashira reaction of the resulting terminal alkyne 10 with aryl iodides.
(E)-1,2-二乙烯基二乙炔基(DVDEEs)在炔烃单元7 '的末端具有供体和受体发色团,是通过钯/ HOAc催化的在炔烃末端带有Si基团的共轭二炔8的二聚共轭二炔8的二聚作用合成的( R 1位置),然后进行甲硅烷基化和随后的最终炔烃10与芳基碘化物的Sonogashira反应。