作者:Ramakrishna Samala、Venkateshwarlu Gurram、Balaram Patro、Narender Pottabathini、K. Mukkanti
DOI:10.1080/00397911.2013.817017
日期:2014.2.16
Abstract A convenient and facile enantioselective synthesis of (−)-erinapyrone B from commercially available D-(+)-malic acid has been achieved in seven steps. One of the key steps in this synthesis was the one-pot reaction of palladium(II)-mediated Wacker-type oxidative cyclization in the presence of a catalytic amount of p-toluenesulphonic acid (p-TsOH) which has been found to be effective for the
摘要 已经通过七个步骤实现了从市售 D-(+)-苹果酸方便且简便地对映选择性合成 (-)-erinapyrone B。该合成的关键步骤之一是在催化量的对甲苯磺酸 (p-TsOH) 存在下,钯 (II) 介导的瓦克型氧化环化的一锅反应,该反应已被证明是有效的用于通过对映体富集的二酮羟基中间体从相应的对映体纯 β-羟基烯酮制备对映体纯 2,3-二氢-4H-吡喃-4-酮。[本文提供补充材料。访问出版商的 Synthetic Communications® 在线版,获取以下免费补充资源:完整的实验和光谱细节。] 图形摘要