A convenient synthesis of amides and nitriles with a branched and conjugated dienyne structure
作者:Vito Fiandanese、Francesco Babudri、Giuseppe Marchese、Angela Punzi
DOI:10.1016/s0040-4020(02)01282-6
日期:2002.11
branched and conjugated dienyne structure has been developed, starting from a readily available mono-silylated unsaturated amide and nitrile with an enyne structure. A nucleophilic hydrohalogenation of the triple bond of the enynes with NaI afforded a Z,E-iododienamide and a Z,E-iododienenitrile that, subjected to palladium-catalyzed cross-coupling reactions with a variety of terminal alkynes, led directly
从易于获得的具有烯炔结构的单甲硅烷基化不饱和酰胺和腈开始,已经开发了一种有效的,立体选择性的合成方法,用于合成具有支链和共轭二烯结构的各种酰胺和腈。用NaI对烯炔的三键进行亲核加氢卤化反应,得到Z,E-碘二烯酰胺和Z,E-碘二烯腈,将其与各种末端炔烃进行钯催化的交叉偶联反应,直接制得标题化合物。