Dehydration of ?-methylcyclopropanemethanol in presence of acidic catalysts

1962 ◽  
Vol 11 (10) ◽  
pp. 1748-1753
Author(s):  
L. Kh. Friedlin ◽  
V. Z. Sharf ◽  
M. A. Abidov ◽  
V. G. Glukhovtsev
Keyword(s):  
Acidic Catalysts

Design and synthesis of a new magnetic metal organic framework as a versatile platform for immobilization of acidic catalysts and CO2 fixation reaction

2021 ◽  
Author(s):  
Faezeh Taghavi ◽  
Amir Khojastehnezhad ◽  
Reza Khalifeh ◽  
Maryam Rajabzadeh ◽  
Fahimeh Rezaei ◽  
...  
Keyword(s):  
Co2 Fixation ◽  
Metal Organic Framework ◽  
Environmentally Friendly ◽  
Chemical Fixation ◽  
Design And Synthesis ◽  
Acidic Catalysts ◽  
Magnetic Metal ◽  
Metal Organic ◽  
Fixation Reaction ◽  
Organic Framework

The first report of the use of an acidic magnetic metal organic framework for the chemical fixation of CO2 as an environmentally friendly reaction.

Conversion of 1-hexanol to di-n-hexyl ether on acidic catalysts

2010 ◽  
Vol 374 (1-2) ◽  
pp. 41-47 ◽  
Author(s):  
Eduardo Medina ◽  
Roger Bringué ◽  
Javier Tejero ◽  
Montserrat Iborra ◽  
Carles Fité
Keyword(s):  
Acidic Catalysts

A Comparative Study of Basic, Amphoteric, and Acidic Catalysts in the Oxidative Coupling of Methanol and Ethanol for Acrolein Production

ChemSusChem ◽  
2017 ◽  
Vol 10 (17) ◽  
pp. 3459-3472 ◽  
Author(s):  
Aleksandra Lilić ◽  
Tiantian Wei ◽  
Simona Bennici ◽  
Jean-François Devaux ◽  
Jean-Luc Dubois ◽  
...  
Keyword(s):  
Comparative Study ◽  
Oxidative Coupling ◽  
Acidic Catalysts

Synthesis of (all-rac)-α-Tocopherol Using Fluorinated NH-Acidic Catalysts

2002 ◽  
Vol 344 (1) ◽  
pp. 37 ◽  
Author(s):  
Werner Bonrath ◽  
Alois Haas ◽  
Eike Hoppmann ◽  
Thomas Netscher ◽  
Horst Pauling ◽  
...  
Keyword(s):  
Acidic Catalysts

Crosslinking Reaction of Rubber with Aldehydes

1970 ◽  
Vol 43 (2) ◽  
pp. 188-209
Author(s):  
Y. Minoura ◽  
M. Tsukasa
Keyword(s):  
Solid State ◽  
Organic Acids ◽  
Physical Properties ◽  
Lewis Acids ◽  
Solid State Reactions ◽  
Crosslinking Reaction ◽  
Reaction Products ◽  
Toluenesulfonic Acid ◽  
Ionic Reaction ◽  
Acidic Catalysts

Abstract The reactions of rubber with aldehydes have previously been studied in latex or in solutions and the reaction products formed by cyclization, condensation, or addition, have been reported. In the present study, solid-state reactions of rubber with aldehydes were carried out. It was found that crosslinked rubbers may be obtained by press curing in the presence of aldehydes with acidic catalysts. Poly-chloroprene and Hypalon especially undergo these reactions without a catalyst or with a small amount of catalyst. In the experiments using various aldehydes, some improvements in the properties of the crosslinked rubber were observed when aldehydes such as paraformaldehyde or α-polyoxymethylene were used. Some Lewis acids such as SnCl2·2H2O were found to be more effective catalysts than the above, and it was found that organic acids such as p-toluenesulfonic acid could also be used. The curing seemed to be an ionic reaction. The physical properties of the crosslinked rubber are similar to those of sulfur-cured rubbers.

scholarly journals Heterogeneous acidic catalysts for the tetrahydropyranylation of alcohols and phenols in green ethereal solvents

2018 ◽  
Vol 14 ◽  
pp. 1655-1659 ◽  
Author(s):  
Ugo Azzena ◽  
Massimo Carraro ◽  
Gloria Modugno ◽  
Luisa Pisano ◽  
Luigi Urtis
Keyword(s):  
Organic Chemistry ◽  
Heterogeneous Catalysis ◽  
Important Class ◽  
Green Solvents ◽  
Reaction Products ◽  
Reaction Conditions ◽  
One Pot ◽  
Acidic Catalysts ◽  
Set Up ◽  
Work Up

The application of heterogeneous catalysis and green solvents to the set up of widely employed reactions is a challenge in contemporary organic chemistry. We applied such an approach to the synthesis and further conversion of tetrahydropyranyl ethers, an important class of compounds widely employed in multistep syntheses. Several alcohols and phenols were almost quantitatively converted into the corresponding tetrahydropyranyl ethers in cyclopentyl methyl ether or 2-methyltetrahydrofuran employing NH4HSO4 supported on SiO2 as a recyclable acidic catalyst. Easy work up of the reaction mixtures and the versatility of the solvents allowed further conversion of the reaction products under one-pot reaction conditions.

Studies in the Acid Catalysed Glycosylation of α-Tocopherol

2002 ◽  
Vol 57 (5) ◽  
pp. 571-578 ◽  
Author(s):  
S. Witkowski ◽  
P. Wałejko
Keyword(s):  
Model Compound ◽  
Chemical Yield ◽  
Acidic Catalysts

Condensation of α-tocopherol and 2,2,5,7,8-pentamethyl-6-hydroxychroman (the model compound) with peracetylated glucose, mannose and galactose was carried out. The influence of various acidic catalysts on the chemical yield and the stereochemical outcome of the glycosylation was investigated.

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