We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Ru@PsIL‐Catalyzed Synthesis of N‐Formamides and Benzimidazole by using Carbon Dioxide and Dimethylamine Borane.
- Authors
Saptal, Vitthal B.; Bhanage, Bhalchandra M.; Sasaki, Takehiko
- Abstract
Abstract: This work reports the synthesis and characterization of ruthenium nanoparticles (Ru NPs) supported on polymeric ionic liquids (PILs). This catalyst shows high catalytic activity towards the N‐formylation of amines and synthesis of benzimidazoles from 1,2‐diamines and carbon dioxide (CO2) by reductive dehydrogenation of dimethylamine borane. This methodology shows excellent functional group tolerance with broad substrate scope towards the synthesis of N‐formamides and benzimidazoles. Interestingly, this protocol also provides the tandem reduction of 2‐nitroamines and CO2 to synthesize benzimidazoles. It was proposed that the ionic liquid phase of the polymer plays pivotal roles such as assisting the stabilization of nanoparticles electrostatically, providing an ionic environment, and controlling the easy access of the substrates/reagents to the active sites. The developed methodology utilizes CO2 as a C1 source and water/ethanol as a green solvent system. Additionally, the catalyst was found to be recyclable in nature and shows five consecutive recycling runs without significant loss in its activity.
- Subjects
RUTHENIUM; BENZIMIDAZOLES; CHEMICAL synthesis; FORMYLATION; GREENHOUSE gas mitigation; METAL nanoparticles; IONIC liquids; NITROANILINE
- Publication
ChemCatChem, 2018, Vol 10, Issue 12, p2593
- ISSN
1867-3880
- Publication type
Article
- DOI
10.1002/cctc.201800185