Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 14, Pages 5495-5513Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b06704
Keywords
Covalent organic frameworks; Carboxylative cyclization; Cyclic carbamates; Oxazolidinone; Pharmaceutical; Agricultural chemicals
Categories
Funding
- Board of Research in Nuclear Sciences (BRNS), Government of India [37(2)/14/03/2018BRNS/37003]
- Department of Science and Technology DST-SERB, New Delhi, Government of India [EMR/2016/004956]
- Council of Scientific and Industrial and Research, CSIR New Delhi, Government of India [02(0284)2016/EMR-II]
- SERB-NPDF, DST, New Delhi, India [PDF/2017/000478]
- University of Kalyani, India
- King Saud University, Riyadh, Saudi Arabia [RSP-2019/127]
- Department of Science and Technology (DST)
- University Grant Commission (UGC) New Delhi, India
- HPC facility at IIT Delhi
Ask authors/readers for more resources
The present work introduces the favorable synthesis of porous functionalized nanomaterials with excellent surface area, porosity, and high CO2 capture ability to facilitate cyclizative reactions by incorporating the CO2 molecule into highly reactive organic moieties. We have attempted to fulfill the target by the decoration of Ag NPs over the exterior surfaces of covalent organic frameworks (COFs) TpPa-1 and TpTta to achieve Ag@TpPa-1 and Ag@TpTta nanomaterials with an absolutely ordered structure. Characterizations of the nanocatalysts (Ag@TpPa-1 and Agp TpTta) have been performed by field emission scanning electron microscopy, thermogravimetric tools, N-2 adsorption/desorption, transmission electron microscopy, Fourier transform infrared spectroscopy, UV-vis, and powder X-ray diffraction analysis. These Ag NPs architectured porous COFs described excellent performance for the benign synthesis of cyclic carbamates from unsaturated amines in the presence of N-iodosuccinimide (NIS) and several 2-oxazolidinone derivatives from propargylamine derivatives via cyclizative atmospheric CO2 capture under solvent-free and alkali-free conditions (sustainable approach). The microporous material Ag@TpTta revealed most excellent catalytic performance than Ag@TpPa-1 during production of cyclic carbamates and oxazolidinones which indicates that the selection of Ag NPs decorated COFs with the excellent surface area has a contributory effect on carboxylative cyclization reaction. Density functional theory studies furnished important information to establish the detailed mechanism of silver (0) catalyzed CO2 incorporation into unsaturated amine. These COFs enriched with N centers can interact with the Ag NPs at their outer exterior surfaces very tightly. These two nanocatalysts exhibited magnificent recycling efficiencies for the generation of cyclic carbamates and 2-oxazolidinones with almost zero silver leaching from the exterior part of the catalyst.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available