开发了铑催化的邻位选择性卡宾插入策略以激活β-咔啉和异喹啉支架的非酸性 sp 2 C H 键。这种转变利用吡啶氮的导向特性,使 C C 键的制造具有高原子经济性、良好的产率和广泛的官能团耐受性。在该协议中,丙二酸二乙酯、二甲基二甲酮和羟吲哚的重氮化合物作为卡宾源进行了测试,释放了对环境无害的 N 2气体作为副产品。此外,为了了解机理,进行了 ESI-MS 研究,并确定了与这种转变相关的关键中间体。此外,由合成的产物完成了平面多环中氮茚-吲哚骨架的无金属结构。此外,还确定了 C N 环状化合物的肿瘤和荧光特性。
Strategies and Synthetic Methods Directed Toward the Preparation of Libraries of Substituted Isoquinolines
作者:Emelia Awuah、Alfredo Capretta
DOI:10.1021/jo100980p
日期:2010.8.20
Strategies for the production of substituted isoquinoline libraries were developed and explored. Routes involving microwave-assisted variants of the Bischler−Napieralski or Pictet−Spengler reaction allowed for cyclization of substituted β-arylethylamine derivatives. The dihydroisoquinolines and tetrahydroisoquinolines thus generated could then be oxidized to their corresponding isoquinoline analogues