Selective Aryne Formation via Grob Fragmentation from the [2+2] Cycloadducts of 3-Triflyloxyarynes
作者:Jiarong Shi、Hai Xu、Dachuan Qiu、Jia He、Yang Li
DOI:10.1021/jacs.6b12161
日期:2017.1.18
chemoselective ring-opening protocol of the formal [2+2] cycloadducts of 3-triflyloxyarynes was developed to generate 2,3-aryne intermediate via Grob fragmentation. A variety of 1,3-di- and 1,2,3-trisubstituted arenes could be readily accessed through this [2+2] cycloaddition-2,3-aryne formation sequence. The regioselectivity in these transformations originates from the steric repulsion of the aliphatic chain
开发了 3-三氟甲氧基芳烃的正式 [2+2] 环加合物的化学选择性开环方案,以通过 Grob 碎片生成 2,3-芳烃中间体。通过这种[2+2]环加成-2,3-芳烃形成序列,可以很容易地获得各种1,3-二-和1,2,3-三取代的芳烃。这些转化中的区域选择性源于脂肪链的空间排斥。