Upgrading bio-based acetone to diacetone alcohol by aldol reaction using Amberlyst A26-OH as catalyst
نویسندگان
چکیده
Abstract The aldol reaction of bio acetone in presence a strongly basic ion exchange resin was carried out with and without the addition water temperature range between ? 30 °C 45 °C. conversion, selectivity service time resins were investigated stirred batch reactor continuous fixed bed reactor. For experiments, both conversion increased decreasing temperature. Furthermore, to medium has positive effect on catalyst resins. flow experiments reactor, towards diacetone alcohol is higher than This high favored by short contact which inhibits as expected most consecutive reactions.
منابع مشابه
Proline-modified DNA as catalyst of the aldol reaction.
DNA templated synthesis has emerged as a powerful tool to steer reactivity by modulating nature s approach to increase the effective molarity of the reactants. By making recourse to the inherently selective duplex formation properties of cognate DNA strands, small molecule reactants are brought to close proximity increasing the effective molarity and thereby significantly accelerating chemical ...
متن کاملBoric Acid-Functionalized Fe3O4@SiO2 as a Novel Superparamagnetically Recoverable Nano Catalyst for Mukaiyama-Aldol Reaction
We have reported the fabrication of boric acid incorporated into surface of magnetite nanoparticles. The catalyst was characterized using spectroscopic, magnetic and thermal techniques (FT-IR, SEM, XRD, ICP, VSM and TGA). It catalyzed Mukaiyama aldol reaction of a ketene silyl acetal type nucleophile ((1-methoxy-2-methylprop-1-enyloxy) trimethylsilane), and various aldehydes (aromatic, aliphati...
متن کاملA supramolecular hydrogel as a reusable heterogeneous catalyst for the direct aldol reaction.
An L-proline based supramolecular hydrogel is used as an efficient heterogeneous organocatalyst for the direct aldol reaction with high stereoselectivity (up to 90% ee) and recyclability (up to 3 runs). The reversible nature of this self-assembled supramolecular system allows for easy recovery and regeneration of the catalyst.
متن کاملProtonated N'-benzyl-N'-prolyl proline hydrazide as highly enantioselective catalyst for direct asymmetric aldol reaction.
Protonated N'-benzyl-N'-l-prolyl-l-proline hydrazide has been developed as a highly enantioselective catalyst for the asymmetric direct aldol reaction of aromatic aldehydes with ketones.
متن کاملHighly enantioselective Mukaiyama aldol reaction in aqueous conditions using a chiral iron(II) bipyridine catalyst.
A highly enantioselective method for the catalytic Mukaiyama aldol reaction of silyl enol ethers with aldehydes in aqueous conditions was developed. The desired aldol products were obtained in excellent yields, diastereo- and enantioselectivities. Structural evidence of the pre-catalyst revealed an unprecedented heptadentate Fe(II) complex with the chiral bipyridine ligand.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Reaction Kinetics, Mechanisms and Catalysis
سال: 2022
ISSN: ['1878-5204', '1878-5190']
DOI: https://doi.org/10.1007/s11144-022-02168-z