Iron-Catalyzed Synthesis of Oxindoles: Application to the Preparation of Pyrroloindolines
作者:Valquírio G. Correia、Juliana C. Abreu、Caio A. E. Barata、Leandro H. Andrade
DOI:10.1021/acs.orglett.7b00078
日期:2017.3.3
A novel and highly efficient synthetic approach to pyrroloindolines has been developed. The process is based on tandem radical addition/cyclization with inexpensive iron catalyst. This method tolerates a wide range of N-methyl-N-arylacrylamides as well carbamoyl radicals, providing access to a variety of functionalized 3,3-disubstituted oxindoles, key intermediates for many bioactive pyrroloindolines
已经开发了新颖且高效的吡咯并吲哚啉合成方法。该方法基于用廉价的铁催化剂进行的串联自由基加成/环化。该方法可耐受各种N-甲基-N-芳基丙烯酰胺以及氨基甲酰基基团,使人们能够使用各种功能化的3,3-二取代的羟吲哚,它们是许多生物活性吡咯并二氢吲哚的关键中间体,例如(±)-乙二胺,(±) -脱氧羟脯氨酸和(±)-植物甲基苯甲醚。