Efficient one-pot fructose to DFF conversion using sulfonated magnetically separable MOF-derived Fe3O4 (111) catalysts

2017 ◽  
Vol 19 (3) ◽  
pp. 647-655 ◽  
Author(s):  
Ruiqi Fang ◽  
Rafael Luque ◽  
Yingwei Li
Keyword(s):  
Heterogeneous Catalyst ◽  
One Pot ◽  
Highly Efficient ◽  
Magnetically Separable ◽  
High Yields

A highly efficient and recyclable non-noble heterogeneous catalyst is developed for one-pot conversion of fructose into 2,5-diformylfuran with extremely high yields (>99%).

A highly efficient and green approach for the synthesis of pyrimido[4,5-b]quinolines using N,N-diethyl-N-sulfoethanaminium chloride

2021 ◽  
Vol 76 (2) ◽  
pp. 85-90
Author(s):  
Abdolkarim Zare ◽  
Manije Dianat
Keyword(s):  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Catalyst Amount ◽  
Green Protocol ◽  
Highly Efficient ◽  
Green Approach ◽  
Solvent Free Conditions ◽  
The One ◽  
High Yields

Abstract A highly efficient and green protocol for the synthesis of pyrimido[4,5-b]quinolines has been described. The one-pot multicomponent reaction of dimedone with arylaldehydes and 6-amino-1,3-dimethyluracil in the presence of N,N-diethyl-N-sulfoethanaminium chloride ([Et3N–SO3H][Cl]) as an ionic liquid (IL) catalyst under solvent-free conditions afforded the mentioned compounds in high yields and short reaction times. Our protocol is superior to many of the reported protocols in terms of two or more of these factors: the reaction times, yields, conditions (solvent-free versus usage of organic solvents), temperature and catalyst amount.

ChemInform Abstract: Nano-MoO3as a Highly Efficient Heterogeneous Catalyst for a One-Pot Synthesis of Tetrahydropyrimidine Derivatives in Water.

ChemInform ◽  
2015 ◽  
Vol 46 (18) ◽  
pp. no-no
Author(s):  
Elham Zarenezhad ◽  
Mohammad Navid Soltani Rad ◽  
Mohammad Hossein Mosslemin ◽  
Masoumeh Tabatabaee ◽  
Somayeh Behrouz
Keyword(s):  
Heterogeneous Catalyst ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
Efficient Heterogeneous Catalyst

A magnetic porous chitosan-based palladium catalyst: a green, highly efficient and reusable catalyst for Mizoroki–Heck reaction in aqueous media

2015 ◽  
Vol 39 (10) ◽  
pp. 7988-7997 ◽  
Author(s):  
Barahman Movassagh ◽  
Nasrin Rezaei
Keyword(s):  
Heterogeneous Catalyst ◽  
Palladium Catalyst ◽  
Heck Reaction ◽  
Aqueous Media ◽  
Reusable Catalyst ◽  
Highly Efficient ◽  
Highly Active ◽  
Porous Chitosan ◽  
High Yields ◽  
Recyclable Heterogeneous Catalyst

We have prepared a highly active and recyclable heterogeneous catalyst for the Heck reaction in aqueous media in high yields.

Nano-MoO3 as a Highly Efficient Heterogeneous Catalyst for a One-Pot Synthesis of Tetrahydropyrimidine Derivatives in Water

2014 ◽  
Vol 38 (10) ◽  
pp. 607-610 ◽  
Author(s):  
Elham Zarenezhad ◽  
Mohammad Navid Soltani Rad ◽  
Mohammad Hossein Mosslemin ◽  
Masoumeh Tabatabaee ◽  
Somayeh Behrouz
Keyword(s):  
Heterogeneous Catalyst ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
Efficient Heterogeneous Catalyst

scholarly journals Zeolite (ZSM-5) as a Highly Efficient and Heterogeneous Catalyst for the Synthesis ofβ-Enaminones andβ-Enamino Esters

2011 ◽  
Vol 8 (4) ◽  
pp. 1632-1637
Author(s):  
Amiya Shekhar ◽  
Devendra Deo Pathak
Keyword(s):  
Heterogeneous Catalyst ◽  
Aliphatic Amines ◽  
Highly Efficient ◽  
High Yields ◽  
Acyclic Ketones ◽  
Aromatic And Aliphatic Amines

Severalβ-enaminones andβ-enaminoesters have been synthesized in high yields from amine andβ-diketone in the presence of Zeolite (ZSM-5) as a catalyst. This method is applicable to both cyclic and acyclic ketones with aromatic and aliphatic amines.

scholarly journals An Efficient and Green Procedure for the Synthesis of 2,4,6-Triarylpyridines Using PPA-SiO2as a Reusable Heterogeneous Catalyst Under Solvent-Free Conditions

2012 ◽  
Vol 9 (4) ◽  
pp. 2037-2043 ◽  
Author(s):  
Abolghasem Davoodnia ◽  
Bahareh Razavi ◽  
Niloofar Tavakoli-Hoseini
Keyword(s):  
Heterogeneous Catalyst ◽  
Simple Procedure ◽  
Substantial Reduction ◽  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
High Yields ◽  
Work Up

Silica gel-supported polyphosphoric acid (PPA-SiO2) was found to be highly efficient, eco-friendly and recyclable heterogeneous catalyst for the synthesis of 2,4,6-triarylpyridines through one-pot three-component reaction of acetophenone, aryl aldehydes, and ammonium acetate under solvent-free conditions. This method has several advantages, such as simple procedure with an easy work-up, short reaction times, and high yields. Furthermore, the catalyst could be recycled after a simple work-up, and used at least three times without substantial reduction in its catalytic activity.

scholarly journals A novel application of 2-silylated 1,3-dithiolanes for the synthesis of aryl/hetaryl-substituted ethenes and dibenzofulvenes

2017 ◽  
Vol 13 ◽  
pp. 1900-1906 ◽  
Author(s):  
Grzegorz Mlostoń ◽  
Paulina Pipiak ◽  
Róża Hamera-Fałdyga ◽  
Heinz Heimgartner
Keyword(s):  
Equimolar Amount ◽  
One Pot ◽  
Efficient Approach ◽  
Highly Efficient ◽  
High Yields

Trimethylsilyldiazomethane (TMS-CHN2) reacts readily with hetaryl thioketones to give sterically crowded 2-trimethylsilyl-4,4,5,5-tetrahetaryl-1,3-dithiolanes with complete regioselectivity at −75 °C as well as at rt. Thiofluorenone, a relatively stable and highly reactive aryl thioketone, yields upon treatment with TMS-CHN2 at −60 °C the corresponding 1,3,4-thiadiazoline. This unstable cycloadduct undergoes decomposition at ca. −45 °C and the silylated thiocarbonyl S-methanide generated thereby is trapped with complete regioselectivity by aryl or hetaryl thioketones forming also sterically crowded 2-trimethylsilyl-1,3-dithiolanes. The obtained 1,3-dithiolanes, by treatment with an equimolar amount of TBAF in a one-pot procedure, are converted in high yields into hetaryl/aryl-substituted ethenes or dibenzofulvenes, respectively, via a cycloreversion reaction of the intermediate 1,3-dithiolane carbanion. The presented protocol offers a new, highly efficient approach to tetrasubstituted ethenes and dibenzofulvenes bearing aryl and/or hetaryl substituents.

Sign in / Sign up

Export Citation Format

Share Document