Urea and Thiourea-Functionalized Mesoporous Silica Nanoparticle Catalysts with Enhanced Catalytic Activity for Diels-Alder Reaction

TitleUrea and Thiourea-Functionalized Mesoporous Silica Nanoparticle Catalysts with Enhanced Catalytic Activity for Diels-Alder Reaction
Publication TypeJournal Article
Year of Publication2010
AuthorsChen HT, Trewyn BG, Wiench JW, Pruski M, Lin VSY
Journal TitleTopics in Catalysis
Volume53
Pages187-191
Date Published03/01
ISBN Number1022-5528
Accession NumberISI:000275558000007
Keywordsbifunctional organocatalysts, diels-alder reaction, heterogeneous catalysis, hydrogen-bond donors, mesoporous silica nanoparticle, metal-free, molecular-sieves, single-site, structural stability, surface hydrogen bonding, thiourea
Abstract

A series of urea- and thiourea-functionalized mesoporous silica nanoparticles (MSN) was synthesized. These materials exhibited a superior catalytic reactivity for Diels-Alder reaction than their homogeneous analogues. The reactivity enhancement was attributed to the site isolation effect induced by the heterogenization of individual catalytic group. The surface hydrogen bonding between the organic catalysts and silanols also improved the catalytic reactivity.

URL<Go to ISI>://000275558000007
DOI10.1007/S11244-009-9423-X