茚并[2,1- b ]噻吩和茚并[1,2- b ]吲哚基序已经在中度至良好的产率从容易获得的取代的硼酸获得,2-溴芳基/乙烯基醛,和亲核试剂如芳烃/杂芳烃其他使用双金属“ Pd-Sn”和AgPF 6的催化组合。正式的三组分偶联涉及Suzuki反应,然后亲核试剂协助串联闭环。还完成了取代杂环稠合的茚,苯并芴和芴的顺序合成。
茚并[2,1- b ]噻吩和茚并[1,2- b ]吲哚基序已经在中度至良好的产率从容易获得的取代的硼酸获得,2-溴芳基/乙烯基醛,和亲核试剂如芳烃/杂芳烃其他使用双金属“ Pd-Sn”和AgPF 6的催化组合。正式的三组分偶联涉及Suzuki反应,然后亲核试剂协助串联闭环。还完成了取代杂环稠合的茚,苯并芴和芴的顺序合成。
Highly efficient synthesis of polysubstituted fluorene via iron-catalyzed intramolecular Friedel–Crafts alkylation of biaryl alcohols
作者:Soumen Sarkar、Sukhendu Maiti、Krishnendu Bera、Swapnadeep Jalal、Umasish Jana
DOI:10.1016/j.tetlet.2012.08.005
日期:2012.10
An efficient and mild Fe(III)-catalyzed intramolecular Friedel–Crafts alkylation of biaryl methanol derivatives has been developed to achieve the substituted fluorenederivatives. The present reaction provides an excellent alternative to published methods because of its high yields, operational simplicity, mild conditions, and use of inexpensive and sustainable catalyst.