An Economical Access to 3,4-Diaryl-2(5<i>H</i>)-furanones and 4-Aryl-6-methyl-2(2<i>H</i>)-pyranones by Pd-Catalyzed Suzuki-Type Arylation of 3-Aryl-4-tosyloxy-2(5<i>H</i>)-furanones and 6-Methyl-4-tosyloxy-2(2<i>H</i>)-pyranones, Respectively
作者:Fabio Bellina、Chiara Marchetti、Renzo Rossi
DOI:10.1002/ejoc.200900581
日期:2009.9
4-diaryl-substituted 2(5H)-furanones have been efficiently synthesized using an inexpensive procedure involving the Pd(OAc)2/PCy3-catalyzed Suzuki-type arylation of readily available 3-aryl-4-tosyloxy-2(5H)-furanones as the key step. The mild conditions of this arylation protocol have also been used for the high yielding synthesis of 4-aryl-6-methyl-2(2H)-pyranones from 6-methyl-4-tosyloxy-2(2H)-pyranone. (© Wiley-VCH
对称和非对称 3,4-二芳基取代的 2(5H)-呋喃酮均已使用廉价的方法高效合成,该方法涉及 Pd(OAc)2/PCy3 催化的 Suzuki 型芳基化容易获得的 3-芳基-4-甲苯磺酰氧基-2(5H)-呋喃酮是关键步骤。该芳基化方案的温和条件也已用于从 6-甲基-4-甲苯磺酰氧基-2(2H)-吡喃酮高产合成 4-芳基-6-甲基-2(2H)-吡喃酮。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)