A ring closing metathesis-manganese dioxide oxidation sequence for the synthesis of substituted pyrroles
作者:Aaron Keeley、Shane McCauley、Paul Evans
DOI:10.1016/j.tet.2016.03.088
日期:2016.5
The combination of ring closing, or enyne metathesis with oxidation in order to prepare N-sulfonyl pyrroles is described. Reasonable to good yields were obtained for a variety of substituents and the procedure may also be conducted in one-pot. 2-Bromo N-sulfonyl adducts prepared in this manner were subjected to an intramolecular Heck-type cyclisation, forming cyclic sulfonamides.
描述了闭环或烯炔复分解与氧化的组合以制备N-磺酰基吡咯。对于各种取代基均获得了合理的高收率,该方法也可以一锅进行。将以此方式制备的2-溴N-磺酰基加合物进行分子内Heck型环化,形成环状磺酰胺。