A [5 + 1] annulation strategy for the synthesis of multifunctional biaryls and <i>p</i>-teraryls from 1,6-Michael acceptor ketene dithioacetals
作者:Shally、Ismail Althagafi、Ranjay Shaw、Amr Elagamy、Abhinav Kumar、Ramendra Pratap
DOI:10.1039/d0ob00998a
日期:——
A new type of ketene dithioacetal, 2-(3,3-bis-methylsulfanyl-1-arylallylidene)malononitriles containing 1,4 and 1,6-Michael acceptors, were synthesized to study their reactivity for the synthesis of a new molecular entity. We report a [5 + 1] annulation strategy for the construction of multifunctional biaryls and p-teraryls by the selection of a suitable nucleophilic source. The reaction of p-nitrotoluene
合成了一种新型的乙烯酮二硫缩醛,即含有 1,4 和 1,6-Michael 受体的 2-(3,3-bis-methylsulfanyl-1-arylallylidene) 丙二腈,以研究它们在合成新分子实体中的反应性。我们报告了一种通过选择合适的亲核源来构建多功能联芳基和对四芳基的 [5 + 1] 环化策略。对硝基甲苯与 2-(3,3-bis-methylsulfanyl-1-aryl-allylidene) 丙二腈在碱性条件下反应以良好的收率产生对四芳基,而使用硝基乙烷作为亲核试剂源通过环化提供官能化联芳基,然后是脱硝。该反应需要温和的条件并表现出良好的官能团耐受性。