This review covers reactions where iminium ions are likely to be active intermediates in the
catalytic cycle. The focus of the review is on synthetically useful protocols and smallmolecule …

Solid catalysts provide numerous opportunities for recovering and recycling catalysts from
reaction environments. These features can lead to improved processing steps, better …

The structural properties of mesoporous silica nanoparticles are reviewed. Different
strategies for the introduction of functional groups are considered. Based on the architectural …

Dielectric and acid− base bifunctional effects are elucidated in heterogeneous
aminocatalysis using a synthetic strategy based on bulk silica imprinting. Acid− base …

Abstract (Chemical Equation Presented) Hard graft pays off for Henry: An efficient acid-base
bifunctional mesoporous catalyst was prepared by one-step post-synthesis grafting of …

A series of bifunctionalized mesoporous silica nanosphere-based (MSN) heterogeneous
catalysts for the nitroaldol (Henry) reaction have been synthesized. A common 3-[2-(2 …

Over the past few decades, research on heterogeneous catalysts, especially metal-free
catalysts in industrial and research transformations, has intensified. Despite the obvious …

We report that the polarity and dielectric constants of solvents used for grafting
organosilanes on mesoporous materials strongly affect the concentration of grafted organic …

Acid–base bifunctional mesoporous silica nanoparticles (MSN) were prepared by a one‐
step synthesis by co‐condensation of tetraethoxysilane (TEOS) and silanes possessing …

The kinetic and mechanistic understanding of cooperatively catalyzed aldol and nitroaldol
condensations is probed using a series of mesoporous silicas functionalized with …