An Easy Access to Benzofurans via DBU Induced Condensation Reaction of Active 2-Hydroxy Acetophenones with Phenacyl Chlorides: A Novel Class of Antioxidant Agents
作者:J. Rangaswamy、H. Vijay Kumar、S. T. Harini、Nagaraja Naik
DOI:10.1002/jhet.1971
日期:2015.5
A convenient and efficient one‐pot synthesis of benzofurans 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j, 3k, 3l, 3m, 3n, 3o, 3p, 3q, 3r, 3s, 3t has been described from 2‐hydroxy acetophenones and phenacyl chlorides in the presence of DBU. The procedure was applicable for a variety of phenacyl chlorides and provides a variety of benzofurans with higher yields. DBU acts as a base and as well as nucleophiles
方便有效的一锅合成苯并呋喃3a,3b,3c,3d,3e,3f,3g,3h,3i,3j,3k,3l,3m,3n,3o,3p,3q,3r,3s,3t已在DBU存在下从2-羟基苯乙酮和苯甲酰氯进行了描述。该方法适用于各种苯甲酰氯,并提供了多种产率更高的苯并呋喃。DBU以及亲核试剂均充当碱基。所有衍生物均经过了针对代表性的2,2'-联苯-1-吡啶基-肼基和2,2'-叠氮基双(3-乙基苯并噻唑啉-6-磺酸)基团的体外抗氧化剂筛选,其结果值得进一步研究。