Diels–Alder reactions of nitrobenzofurans: a simple dibenzofuran Synthesis. Theoretical studies using DFT methods
作者:Claudia D. Della Rosa、Juan P. Sanchez、María N. Kneeteman、Pedro M.E. Mancini
DOI:10.1016/j.tetlet.2011.02.074
日期:2011.5
Diels–Alder reactions with normal electron demand using several structurally different dienes. A very strong electron-acceptor group, such as the nitro group, pushes the dienophilic character of these heterocycliccompounds. Since this substituent is easily extruded under thermal conditions, this reaction sequence becomes a simple method for the preparation of families of organic compounds with heteroatom