Efficient synthetic approach to heterocycles possessing the 3,3-disubstituted-2,3-dihydrobenzofuran skeleton via diverse palladium-catalyzed tandem reactions
作者:Magali Szlosek-Pinaud、Philippe Diaz、Jean Martinez、Frédéric Lamaty
DOI:10.1016/j.tet.2007.02.035
日期:2007.4
Various palladium-catalyzed cascade reactions of O-alkylated 2-iodophenol were explored in order to synthesize novel dihydrobenzofurans. An efficient tandem cyclization/anion capture reaction was developed to yield 3,3-disubstituted-2,3-dihydrobenzofurans. A small library of these compounds was prepared with a parallel organic synthesizer. A multi-component version of this reaction involving 2-iodophenol
为了合成新型的二氢苯并呋喃,探索了各种钯催化的O-烷基化的2-碘苯酚的级联反应。开发了有效的串联环化/阴离子捕获反应以产生3,3-二取代的2,3-二氢苯并呋喃。这些化合物的小型文库是用平行有机合成仪制备的。该反应的多组分形式涉及2-碘苯酚,烷基化剂和亲核试剂,提供了相同的产物。甲氧基羰基取代的杂环水解为游离酸,可用于进一步转化。