Mesoporous silica grafted with a tertiary amine was used as a basic nanocatalyst to promote in confined medium the enantioselective cascade rearrangement of enediynes based on the phenomenon of memory of chirality; the multi-substrates recyclable catalytic reagent could easily be recovered by simple filtration, and reused without any decrease in activity even when changing the solvent.

Download full-text PDF

Source
http://dx.doi.org/10.1039/c1cc10551eDOI Listing

Publication Analysis

Top Keywords

nanocatalyst promote
8
efficient recyclable
4
recyclable hybrid
4
hybrid nanocatalyst
4
promote enantioselective
4
enantioselective radical
4
radical cascade
4
cascade rearrangements
4
rearrangements enediynes
4
enediynes mesoporous
4

Similar Publications

A Universal Solid-Phase Synthetic Strategy for Ultrafine Intermetallic Libraries Confined in Ordered Mesoporous Carbon.

Adv Mater

December 2024

Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.

Article Synopsis
  • Ordered intermetallic nanocatalysts supported on high-surface-area materials show significantly improved catalytic activity and stability compared to random alloys.
  • Synthesizing these ultrafine nanocatalysts has been difficult due to high temperatures causing sintering and phase separation, but a new method has been developed that effectively prevents these issues even at temperatures up to 1000 °C.
  • The researchers successfully created a library of intermetallic nanocatalysts, highlighting the exceptional performance of PtFe nanocatalysts, which outperformed traditional platinum catalysts and could lead to advancements in industrial applications.
View Article and Find Full Text PDF

The solar-driven catalytic recycling of plastics has recently emerged as a new frontier in industry. Nevertheless, its large-scale application requires the catalysts being capable of the strong absorption of visible and near-infrared light, strengthened photothermal efficiency, high activity and selective toward target product, enhanced stability, as well as easy separation from the products. In this work, magnetic Ni-MnO nanocatalyst (MN/C) is synthesized via the pyrolysis of metal-organic framework (MOF) for the photothermal catalytic recycling of polyethylene terephthalate (PET) to bis(2-hydroxyethyl) terephthalate (BHET).

View Article and Find Full Text PDF

Double catalysis of CoSe-NiSe heterogeneous dual-chamber core-shell Achieves high conversion of polysulfides.

J Colloid Interface Sci

December 2024

National Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Batteries Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China. Electronic address:

Achieving efficient catalytic conversion of lithium polysulfides is a key way to improve kinetics in lithium-sulfur (Li-S) batteries. However, due to the limited nature of the catalyst interface, it is difficult to achieve a high conversion rate of LiPSs in one step. A novel heterogeneous dual-chamber core-shell nanocatalyst (CoSe-NiSe@PC) is described here, which efficiently accommodates sulfur and provides a heterogeneous dual catalytic interface like a two-stage "filter".

View Article and Find Full Text PDF

Optimizing the composition and structure of nanocatalysts is an efficient approach to achieving the top electrocatalytic performance. However, the construction of hollow nanocomposites composed of metal phosphides and highly conductive carbon to promote the electrocatalytic performance of metal phosphide-based catalysts is rarely reported. Herein, a CoFeP/C nanobox nanocomposite consisting of Co-Fe mixed-metal phosphides and N-doped carbon was successfully fabricated through an ion-exchange phosphidation strategy derived from ZIF-67 nanocubes.

View Article and Find Full Text PDF
Article Synopsis
  • Development of affordable nanocatalysts is crucial for transforming hazardous pollutants like 4-nitrophenol (4-NP) into useful products such as 4-aminophenol (4-AP), meeting environmental and health needs.
  • Researchers created a new nanocatalyst called BiNPs@3D-NCTP, which is made of bismuth nanoparticles supported on porous nanoflowers, exhibiting a unique flower-like structure for enhanced surface area and stability.
  • This catalyst achieved an impressive 99.85% conversion of 4-NP to 4-AP in just four minutes, showing excellent catalytic efficiency and stability over five reaction cycles.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!