One-pot cascade transformation of xylose into γ-valerolactone (GVL) over bifunctional Brønsted–Lewis Zr–Al-beta zeolite

2016 ◽  
Vol 18 (21) ◽  
pp. 5777-5781 ◽  
Author(s):  
Blanca Hernández ◽  
Jose Iglesias ◽  
Gabriel Morales ◽  
Marta Paniagua ◽  
Clara López-Aguado ◽  
...  
Keyword(s):  
Zeolite Catalysts ◽  
Beta Zeolite ◽  
Cascade Process ◽  
Synthetic Methodology ◽  
One Pot ◽  
The One ◽  
Zeolite P

Bifunctional Brønsted–Lewis, Zr- and Al-containing beta zeolite catalysts prepared by a post-synthetic methodology promote the one-pot production of γ-valerolactone (GVL) from xylose in alcohol media through a cascade process.

scholarly journals ZnO-beta zeolite mediated simple and efficient method for the one-pot synthesis of quinoxaline derivatives at room temperature

2010 ◽  
Vol 8 (2) ◽  
pp. 320-325 ◽  
Author(s):  
Santosh Katkar ◽  
Pravinkumar Mohite ◽  
Lakshman Gadekar ◽  
Balasaheb Arbad ◽  
Machhindra Lande
Keyword(s):  
Efficient Method ◽  
Room Temperature ◽  
Environmentally Benign ◽  
Beta Zeolite ◽  
Reaction Conditions ◽  
One Pot ◽  
One Pot Synthesis ◽  
Quinoxaline Derivatives ◽  
The One ◽  
Work Up

AbstractA rapid and an efficient one-pot method for the synthesis of quinoxalines catalysed by ZnO-beta zeolite at room temperature is described. This environmentally benign method provides several advantages over methods that are currently employed such as a simple work-up, mild reaction conditions, good to excellent yields, and a process to recover and reuse the catalyst for several cycles with consistent activity.

A combo Zr-HY and Al-HY zeolite catalysts for the one-pot cascade transformation of biomass-derived furfural to γ-valerolactone

2019 ◽  
Vol 375 ◽  
pp. 56-67 ◽  
Author(s):  
Hongwei Zhang ◽  
Weijia Yang ◽  
Irwan Iskandar Roslan ◽  
Stephan Jaenicke ◽  
Gaik-Khuan Chuah
Keyword(s):  
Zeolite Catalysts ◽  
One Pot ◽  
Hy Zeolite ◽  
The One

Understanding the role of Al/Zr ratio in Zr-Al-Beta zeolite: Towards the one-pot production of GVL from glucose

2020 ◽  
Author(s):  
Marta Paniagua ◽  
Gabriel Morales ◽  
Juan A. Melero ◽  
Jose Iglesias ◽  
Clara López-Aguado ◽  
...  
Keyword(s):  
Beta Zeolite ◽  
One Pot ◽  
The One

scholarly journals ZnO-beta zeolite: as an effective and reusable heterogeneous catalyst for the one-pot synthesis of polyhydroquinolines

2010 ◽  
Vol 3 (4) ◽  
pp. 287-292 ◽  
Author(s):  
Santosh S. Katkar ◽  
Pravinkumar H. Mohite ◽  
Lakshman S. Gadekar ◽  
Balasaheb R. Arbad ◽  
Machhindra K. Lande
Keyword(s):  
Heterogeneous Catalyst ◽  
Beta Zeolite ◽  
One Pot ◽  
One Pot Synthesis ◽  
The One

Ir-Beta zeolite as a heterogeneous catalyst for the one-pot transformation of citronellal to menthol

2004 ◽  
pp. 1292-1293 ◽  
Author(s):  
Flori Iosif ◽  
Simona Coman ◽  
Vasile Pârvulescu ◽  
Paul Grange ◽  
Stéphanie Delsarte ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Beta Zeolite ◽  
One Pot ◽  
The One

scholarly journals Transformation of Pectins into Non-Ionic or Anionic Surfactants Using a One-Pot and Cascade Mode Process

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1956
Author(s):  
Damien Milliasseau ◽  
Jelena Jeftić ◽  
Freddy Pessel ◽  
Daniel Plusquellec ◽  
Thierry Benvegnu
Keyword(s):  
Surface Tension ◽  
Galacturonic Acid ◽  
Alkyl Chain ◽  
Anionic Surfactants ◽  
Cascade Process ◽  
One Pot ◽  
Aquatic Ecotoxicity ◽  
Alkyl Glycosides ◽  
Tension Properties ◽  
The One

The present article describes the one-pot synthesis of double- and single-tailed surfactants by a cascade process that involves the hydrolysis/butanolysis of pectins into butyl galacturonate monosaccharides followed by transesterification/transacetalisation processes with fatty alcohols, and subsequent aqueous basic and acid treatments. The cascade mode allows the depolymerisation to proceed more efficiently, and the purification conditions are optimised to make the production of single-tailed surfactants more manufacturable. These products in a pure form or as mixtures with alkyl glycosides resulting from butanolysis and transglycosylation of pectin-derived hexoses, exhibit attractive surface-tension properties, especially for the n-oleyl ᴅ-galactosiduronic acid products. In addition, a readily biodegradability and an absence of aquatic ecotoxicity are shown for the galacturonic acid derivatives possessing an oleyl alkyl chain at the anomeric position.

scholarly journals Calcium-mediated one-pot preparation of isoxazoles with deuterium incorporation

2018 ◽  
Vol 5 (2) ◽  
pp. 226-231 ◽  
Author(s):  
Maria S. Ledovskaya ◽  
Konstantin S. Rodygin ◽  
Valentine P. Ananikov
Keyword(s):  
Calcium Carbide ◽  
Synthetic Methodology ◽  
Deuterium Incorporation ◽  
One Pot ◽  
The One

In this work, a novel synthetic methodology for the one-pot preparation of isoxazoles directly from the reaction of calcium carbide with aldoximes is reported.

A Series of Metal-Organic Frameworks for Selective CO2 Capture and Catalytic Oxidative Carboxylation of Olefins

2018 ◽  
Author(s):  
Huong T. D. Nguyen ◽  
Y B. N. Tran ◽  
Hung N. Nguyen ◽  
Tranh C. Nguyen ◽  
Felipe Gándara ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Adsorption ◽  
New Materials ◽  
One Pot ◽  
Acid Gas ◽  
Naphthalene Diimide ◽  
Styrene Carbonate ◽  
Metal Organic ◽  
Adsorption Of Co ◽  
The One

<p>Three novel lanthanide metal˗organic frameworks (Ln-MOFs), namely MOF-590, -591, and -592 were constructed from a naphthalene diimide tetracarboxylic acid. Gas adsorption measurements of MOF-591 and -592 revealed good adsorption of CO<sub>2</sub> (low pressure, at room temperature) and moderate CO<sub>2</sub> selectivity over N<sub>2</sub> and CH<sub>4</sub>. Accordingly, breakthrough measurements were performed on a representative MOF-592, in which the separation of CO<sub>2</sub> from binary mixture containing N<sub>2</sub> and CO<sub>2</sub> was demonstrated without any loss in performance over three consecutive cycles. Moreover, MOF-590, MOF-591, and MOF-592 exhibited catalytic activity in the one-pot synthesis of styrene carbonate from styrene and CO<sub>2</sub> under mild conditions (1 atm CO<sub>2</sub>, 80 °C, and solvent-free). Among the new materials, MOF-590 revealed a remarkable efficiency with exceptional conversion (96%), selectivity (95%), and yield (91%). </p><br>

A Study on the Rearrangement of Dialkyl 1-Aryl-1-hydroxymethylphosphonates to Benzyl Phosphates

2020 ◽  
Vol 24 (4) ◽  
pp. 465-471 ◽  
Author(s):  
Zita Rádai ◽  
Réka Szabó ◽  
Áron Szigetvári ◽  
Nóra Zsuzsa Kiss ◽  
Zoltán Mucsi ◽  
...  
Keyword(s):  
Quantum Chemical ◽  
Room Temperature ◽  
Phase Transfer ◽  
One Pot ◽  
Substrate Dependence ◽  
Triethylbenzylammonium Chloride ◽  
One Step ◽  
The Pudovik Reaction ◽  
The One ◽  
Solid Liquid

The phospha-Brook rearrangement of dialkyl 1-aryl-1-hydroxymethylphosphonates (HPs) to the corresponding benzyl phosphates (BPs) has been elaborated under solid-liquid phase transfer catalytic conditions. The best procedure involved the use of triethylbenzylammonium chloride as the catalyst and Cs2CO3 as the base in acetonitrile as the solvent at room temperature. The substrate dependence of the rearrangement has been studied, and the mechanism of the transformation under discussion was explored by quantum chemical calculations. The key intermediate is an oxaphosphirane. The one-pot version starting with the Pudovik reaction has also been developed. The conditions of this tandem transformation were the same, as those for the one-step HP→BP conversion.

Sign in / Sign up

Export Citation Format

Share Document