Abstract Silica-bonded S-sulfonic acid nanoparticles (SBSSANPs) were easily synthesized from silica nanoparticles and showed to be an efficient catalyst in the synthesis the symmetrical N,N′-alkylidene bisamides. Reaction of aldehydes and amides in the presence of the catalyst afforded the corresponding bisamides in good to excellent yields. The extensive range of substrates suggests general applicability
                                    摘要 
二氧化硅键合的 S-
磺酸纳米粒子 (S
BSANPs) 很容易由
二氧化硅纳米粒子合成,并被证明是合成对称 N,N'-亚烷基双酰胺的有效催化剂。在催化剂存在下醛和酰胺的反应以良好至极好的产率提供相应的双酰胺。广泛的底物范围表明该方法具有普遍适用性。催化剂的可重复使用性、简单的后处理程序和较短的反应时间是该协议的其他优点。补充材料可用于本文。访问出版商的 Synthetic Communications ® 在线版以查看免费的补充文件。图形概要