论文名称：Selective Functionalization of Hollow Nanospheres with Acid and Base Groups for Cascade Reactions
论文类型：期刊论文
发表刊物：CHEMISTRY-A EUROPEAN JOURNAL
收录刊物：SCIE、EI、PubMed、Scopus
卷号：21
期号：20
页面范围：7403-7407
ISSN号：0947-6539
关键字：cascade reaction; hollow nanosphere; nanostructures; mesoporous materials; selective functionalization
摘要：The inner-surface functionalization of hollow silica spheres has rarely been reported and is still a challenging topic. Herein, we report a deacetalization-Henry cascade reaction catalyzed by dual-functionalized mesoporous silica hollow nanospheres with basic amine groups (-NH2) on the internal shell and carboxylic acid groups (-COOH) on the external shell. The selective functionalization has been realized by a combination of "step-by-step post-grafting" and "cationic surfactant-assisted selective etching" strategy. Compared to unisolated catalyst, the selectively isolated acidic and basic dual catalyst provides excellent catalytic performance for the deacetalization-Henry cascade reaction in terms of both activity (>99%) and selectivity (95 %).
发表时间：2015-05-11