[reaction: seet text] Two synthetic routes to several (Z)-polyaromatic and heteroaromatic substituted vinylacetylenes are described. The nature of aryl- or heteroaryl-substituted carboxaldehyde used as starting material dictated the choice of Wittig salt employed. A very attractive way to construct polyaromatic and pyridine-containing enynes is the reaction of polyaromatic and pyridine-containing aldehydes
[反应:seet text]描述了到几种(Z)-聚芳族和杂芳族取代的
乙烯基乙炔的两种合成路线。用作原料的芳基或杂芳基取代的
甲醛的性质决定了所用维蒂希盐的选择。构造聚芳族和含
吡啶的烯炔的一种非常有吸引力的方法是在
叔丁醇钾存在下,聚芳族和含
吡啶的醛与
溴甲基三苯基
溴化phosph的反应,然后进行Sonogashira甲
硅烷基化反应(方法B)。