作者:Cecile Elgindy、Jas S. Ward、Michael S. Sherburn
DOI:10.1002/anie.201908496
日期:2019.10.7
The first chemical synthesis of tetravinylallene (3,5-divinylhepta-1,3,4,6-tetraene) is reported. The final, key step of the synthesis involves a palladium-catalyzed, Negishi-type cross-coupling involving 1,5-transposition of a penta-2-en-4-yn-1-ol methanesulfonate. The unprecedented fundamental hydrocarbon is sufficiently stable to be purified by flash chromatography. A similar synthetic pathway grants
报道了四乙烯基烯(3,5-二乙烯基庚-1,3,4,6-四烯)的第一化学合成。合成的最后关键步骤涉及钯催化的Negishi型交叉偶联,该偶联涉及戊2-en-4-yn-1-ol甲磺酸盐的1,5-转移。空前的基础碳氢化合物足够稳定,可以通过快速色谱法纯化。相似的合成途径可让您获得第一个取代的四乙烯基亚芳基,从而深入了解取代对稳定性和反应性的影响。四乙烯基烯被证明在迅速建立结构复杂性方面开辟了新天地,报道了三个新序列。