Porous aromatic frameworks containing binaphthyl-dihydroazepine units (cBAPAFs) as catalytic supports for asymmetric reactions

Asymmetric hydrogenation using a covalently immobilized Ru-BINOL-AP@MSNs catalyst

“…[21][22][23] The use of binaphthyl's chirality in silica supports has been studied and used in asymmetric catalysis in particular. 24,25 Mesoporous amorphous silica nanoparticles (MSNs) have been shown to be useful support materials because they can be obtained in large quantities, possess a large surface-to-volume ratio, are stable at high temperatures and pH, and can be functionalized in a number of different ways. [26][27][28][29][30] In light of the rising appreciation for MSNs as promising platforms, the proposed work aimed to develop a state-of-the-art method to synthesize an exceedingly competent and enantioselective system by grafting the Ru(III) (S) BINOL moiety onto MSNs.…”

Porous Aromatic Framework Covalently Embedded with N‐Hydroxyphthalimide as Metal‐free Heterogeneous Catalyst for Highly Efficient and Selective Aerobic Oxidation

“…Among all the advanced porous materials, PAFs built from rigid aromatic building blocks linked by stable carbon-carbon single bonds are superior platforms as supports on account of their metal-free and robust structures as well as easy functionalizations. [29][30][31][32] To ulteriorly seek for the ideal catalytic oxidation systems, herein we report the first synthesis of NHPI functionalized PAF material (PAF-NHPI) by a combination of bottom-up and post-synthetic strategies. The as-synthesized PAF-NHPI indeed exhibiting improved stability and highly dense organocatalytic sites has been demonstrated to be a highly efficient, selective and recyclable heterogeneous catalyst for the aerobic oxidation of alcohols, aldehydes, olefins and hydrosilanes to the corresponding target products.…”

“…Among all the advanced porous materials, PAFs built from rigid aromatic building blocks linked by stable carbon‐carbon single bonds are superior platforms as supports on account of their metal‐free and robust structures as well as easy functionalizations [29–32] . To ulteriorly seek for the ideal catalytic oxidation systems, herein we report the first synthesis of NHPI functionalized PAF material ( PAF‐NHPI ) by a combination of bottom‐up and post‐synthetic strategies.…”

Stabilized Chiral Organic Material Containing BINAP Oxide Units as a Heterogeneous Asymmetric Organocatalyst for Allylation of Aldehydes

“…However, the limited stability of common catalysts and their difficult recyclability appear as some of their main limitations. Therefore, the quest for recyclable asymmetric organocatalytic systems is an important target in the field of heterogeneous catalysis. , Toward this goal, an emerging strategy consists of incorporating asymmetric organocatalytic building blocks on extended organic materials such as porous aromatic frameworks (PAFs), covalent organic frameworks (COFs), and other porous organic polymers (POPs) . Design of reticular materials offers many possibilities for the assembly of complex organic fragments into organized frameworks that display exceptional features, such as well-defined channels and tunability of chemical composition.…”