We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Knoevenagel Condensation Catalyzed by Biogenic Carbonates for the Solvent-Free Synthesis of 3-(Furan-2-yl)acrylonitrile Derivatives.
- Authors
Mesa Castro, Eliana Yasmín; Monroy Ramírez, Andrés Felipe; Martínez, José Jobanny; Castillo, Juan-Carlos; Caicedo Pineda, Gerardo Andrés
- Abstract
Calcium and barium carbonates were synthesized via biologically induced mineralization using Bacillus subtilis. The biogenic materials were characterized by using infrared and Raman spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and powder X-ray diffraction. These biogenic carbonates were then tested as basic heterogenous catalysts for the solvent-free Knoevenagel reaction between 5-HMF derivatives and active methylene compounds, producing 3-(furan-2-yl)acrylonitrile derivatives in 71–87% yields. Optimal catalytic performance was achieved with a 50:50 Ca:Ba ratio, attributed to the synergistic interaction between baritocalcite and vaterite, which enhances the availability of active basic sites and surface interactions. This method offers operational simplicity, reduced reaction times, good yields, excellent (E)-selectivity, and minimal catalyst loading.
- Subjects
CONDENSATION reactions; X-ray powder diffraction; METHYLENE compounds; BACILLUS subtilis; RAMAN spectroscopy
- Publication
Catalysts (2073-4344), 2024, Vol 14, Issue 12, p927
- ISSN
2073-4344
- Publication type
Academic Journal
- DOI
10.3390/catal14120927