4224-87-7Relevant articles and documents
Micellar Catalysis Strategy of Cross-Condensation Reaction: The Effect of Polar Heads on the Catalytic Properties of Aminoalcohol-Based Surfactants
Hafidi, Zakaria,Ait Taleb, Mohamed,Amedlous, Abdallah,El Achouri, Mohammed
, p. 1309 - 1324 (2020)
Abstract: The effect of the polar head and the concentration of quaternary ammonium surfactants (C14EtOH, C14iPrOH, C14PrOH, where, 14 = carbon number iPrOH = iso-propanol, EtOH = ethanol, PrOH = propanol) in micellar cata
Mizoroki–Heck coupling reaction on the surface of sepiolite clay-supported Pd/Cu nanoalloy
Aryanasab, Fezzeh
, (2022/02/14)
Well distributed Pd/Cu bimetallic nanoalloy supported on acid-modified sepiolite (ASEP) was prepared via a solvothermal process. The resulting system, Pd/Cu@ASEP, was characterized using spectroscopic data such as FT-IR, XRD, TEM and ICP-AES. The morphology characterization revealed that the crystalline bimetallic particles were dispersed on ASEP as nanoalloys with diameters ranged from 25 to 30 nm. This system was successfully used for ligand-free Mizoroki-Heck coupling in the presence of air, under mild conditions. This method has advantages compared to other systems, such as short reaction times, high yields, facile catalyst and easy separation and reusability of the catalyst. The catalyst was compatible with a variety of aryl and heteraryl iodides, which provides favorable products with good to high yields. Aryl and heteraryl bromides could also be activated for the Mizoroki-Heck reaction using Pd/Cu@ASEP catalyst, with good to moderate yields.
Method for preparing phenyl propenone compound by catalyzing phenylacetylene through molecular sieve
-
Paragraph 0076-0080, (2021/03/13)
The invention belongs to the field of molecular sieve catalysis and organic synthesis, and discloses a method for preparing a phenyl propenone compound by catalyzing phenylacetylene through a molecular sieve, which comprises the following steps: adding a phenylacetylene compound I, aldehyde II and a molecular sieve catalyst into a small reaction kettle without adding an organic solvent and any other assistants; performing stirring to react for 0.25-6 hours under the condition of heating at 30-90 DEG C, cooling the reaction kettle to room temperature, performing diluting with ethyl acetate, andcentrifugally separating the catalyst to obtain the phenyl allyl ketone compound III. The molecular sieve catalyst provided by the invention is H-beta of which the silica-alumina ratios are respectively 14 and 29. The method is simple in reaction process, high in catalytic activity and selectivity, recyclable, environmentally friendly and capable of achieving large-scale industrial production.