Novel One-Pot Synthesis of 3-Phenylnaphtho[2,3-b]furan and 3-Phenylbenzofurans Under Microwave Irradiation and Solvent-Free Conditions
作者:Zhongxing Wang、Jinzhong Gu、Huanwang Jing、Yongmin Liang
DOI:10.1080/00397910902883702
日期:2009.10.21
Abstract A one-pot synthesis of functionalized benzofurans has been developed via O-alkylation, carbon–carbon coupling/cyclization, and dehydration/olefination tandem reactions from phenacyl bromide and phenols under microwave irradiation and solvent-free conditions in the presence of mineral-supported reagent and inorganic base. The best selectivity for forming benzofuran product has been achieved
摘要 苯甲酰溴和苯酚在微波辐射和无溶剂条件下,在矿物负载存在的条件下,通过 O-烷基化、碳-碳偶联/环化和脱水/烯化串联反应开发了功能化苯并呋喃的一锅法合成。试剂和无机碱。以 Na2CO3 作为碱实现了形成苯并呋喃产品的最佳选择性。无机碱的活性顺序为:K2CO3>NaHCO3>Na2CO3>KHCO3>Na2SO3>KOH>K3PO4>NaOH>KH2PO4>KOAc。这种新颖的合成以一步组装的三个新键和一个环系统为特征。