Preparation of α,β-Unsaturated Diazoketones Employing a Horner−Wadsworth−Emmons Reagent
作者:Vagner D. Pinho、Antonio C. B. Burtoloso
DOI:10.1021/jo1021844
日期:2011.1.7
A new method for the preparation of α,β-unsaturateddiazoketones from aldehydes and a Horner−Wadsworth−Emmonsreagent is reported. The method was applied to the short synthesis of two substituted pyrrolidines.
One-step syntheses of substituted 2-pyrrolidinones and 3-pyrrolidinones from α,β-unsaturated diazoketones and amines. Application in the synthesis of barmumycin
作者:Rafael M.P. Dias、Patrícia B. Momo、Antonio C.B. Burtoloso
DOI:10.1016/j.tet.2017.05.040
日期:2017.6
A simple and one-pot way to prepare substituted 2- and 3-pyrrolidinones is described. The method uses unsaturated diazoketones (obtained from aldeydes in a single step) and amines, and provide an easyaccess to these important classes of nitrogen heterocycles. Furthermore, application of this methodology to the synthesis of the natural product barmumycin is achieved in 3 steps from these diazoketones