Novel approach towards the synthesis of skeletally diverse benzimidazole-pyrrolo[1,2-a]quinoxaline by SNAr/Pictet–Spengler reaction under focused microwave irradiation
作者:Barnali Maiti、Chung-Ming Sun
DOI:10.1039/c1nj20153k
日期:——
In a study aimed at developing a novel concise approach to the benzimidazole-pyrrolo[1,2-a]quinoxaline core of medicinal interest, a Pictet–Spengler reaction has been identified that gives direct access to the target compound on soluble polymer support under focused microwave irradiation. The pyrrole moiety has been introduced on polymer immobilized benzimidazole derivatives by SNAr diversification
在一项旨在开发一种新的简明方法用于研究具有药用价值的苯并咪唑-吡咯并[1,2-a]喹喔啉核心的研究中,已鉴定出一种Pictet-Spengler反应,该反应可在聚焦条件下直接接触可溶性聚合物载体上的目标化合物微波照射。吡咯部分已通过S N Ar多样化引入到聚合物固定的苯并咪唑衍生物上,随后通过还原转化为标题化合物,然后用各种酮进行Pictet-Spengler环化,收率高且纯度高。此处描述的工作证明了在新型杂环的构建中,碱基介导的S N Ar反应与Pictet-Spengler环化相结合的多功能性。