Facile Synthesis of Cross-Conjugated<i>gem</i>-Disubstituted Trienes via Palladium-Catalyzed Cross-Coupling Protocol of 1,1-Disubstituted 2,4-Diiodo-But-1-ene With Alkenes
作者:Min Shi、Li-Xiong Shao
DOI:10.1055/s-2004-820017
日期:——
Cross-conjugated coupling products described in the title are obtained in moderate to high yields by the reactions of the corresponding 1,1-disubstituted 2,4-diiodo-but-1-enes, which are derived from the ring-opening reaction of methylenecyclopropanes with iodine, with substituted alkenes in the presence of palladium(II) catalyst under simple Heck-type reaction conditions.
标题中所述的交联偶合产物是通过相应的1,1-二取代的2,4-二碘-丁-1-烯与取代烯烃在简单的Heck类型反应条件下,在钯(II)催化剂存在下反应而获得的,产率为中等到较高。这些1,1-二取代的2,4-二碘-丁-1-烯是通过美克烯环开裂反应与碘反应得到的。