A cascade oxazole-benzannulation for the synthesis of naphtho[2,3-d]oxazoles has been developed employing ortho-alkynylamidoarylketones as substrates. This procedure provides the advantage of preparing a wide variety of substituents on naphtho[2,3-d]oxazole structures. In addition, o-alkynylamidoarylketones could be prepared from easily accessible and a wide variety of commercially available starting
使用邻炔基氨基芳基酮作为底物开发了用于合成萘并[2,3- d ]恶唑的级联恶唑-苯并环化反应。该程序提供了在萘并[2,3- d ]恶唑结构上制备各种取代基的优势。此外,o-炔基氨基芳基酮可以从易于获得且种类繁多的市售起始材料制备。因此,该方法是合成具有多种取代基的萘并[2,3- d ]恶唑的明智选择。在这项工作中,证明了 27 个示例以中等到良好的收率提供所需的产品。
Divergent Synthesis of 3-Hydroxyfluorene and 4-Azafluorene Derivatives from <i>ortho</i>-Alkynylarylketones
divergent synthesis of 3-hydroxyfluorene and 4-azafluorene derivatives has been developed. ortho-Alkynylarylketone was employed as the substrates to react with molecular iodine leading to the generation of a common intermediate, indenone precursor. This precursor could lead to the diversified products when the reaction was carried out under different conditions. The indenone intermediate was converted
The 1,4-nickel migration process from aryl to alkenyl groups is now reported for the first time. The alkenyl nickel intermediates generated by this highly stereoselective migration process can be coupled with brominated alkanes to form multisubstituted olefins. The current method provides a new and efficient approach for the synthesis of Z/E olefins with high stereoselectivity.