SbCl<sub>3</sub>-catalyzed solvent-free Friedel–Crafts reaction of phenols with mandelic acids to 3-aryl benzofuran-2(3<i>H</i>)-ones: Synthesis of spirocyclic 2,3-dihydrobenzofuran-2-ones
作者:Bhaskar B. Dhotare、Manoj K. Choudhary、Sandip K. Nayak
DOI:10.1080/00397911.2016.1226341
日期:2016.11.1
ABSTRACT A facile, SbCl3-catalyzed, one-pot, tandem Friedel–Crafts/lactonization reaction of phenols and mandelic acids has been developed under solvent-free conditions to afford 3-aryl benzofuran-2(3H)-ones in good to high yields (52–90%). Additionally, the utility of 3-aryl benzofuran-2(3H)-ones is demonstrated by using them as precursors in the synthesis of a new class of spirocyclic benzofuran-2-ones
摘要 在无溶剂条件下,开发了一种简便的、SbCl3 催化的、一锅法、串联傅-克/内酯化反应的苯酚和扁桃酸,以高产率获得 3-芳基苯并呋喃-2(3H)-酮(52–90%)。此外,通过将 3-芳基苯并呋喃-2(3H)-酮用作前体,使用经典合成方法合成一类新的螺环苯并呋喃-2-酮,证明了它们的效用。图形概要