Efficient Synthesis of 2,3-Dihydro-1H-Perimidine Derivatives Using HBOB as a Novel Solid Acid Catalyst

2012 ◽  
Vol 65 (1) ◽  
pp. 86 ◽  
Author(s):  
Sunanda B. Phadtare ◽  
R. Vijayraghavan ◽  
Ganapati S. Shankarling ◽  
Douglas R. MacFarlane
Keyword(s):  
Boric Acid ◽  
Efficient Method ◽  
Solid Acid ◽  
Simple Procedure ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Thermal Processes ◽  
Efficient Synthesis ◽  
Acid Catalyzed ◽  
Time Required

An efficient method for the synthesis of substituted 2,3-dihydro-1H-perimidine derivatives is described using bis(oxalato)boric acid (HBOB) as catalyst. The methodology provides an easily handled and recyclable catalyst for this type of reaction as an alternative platform to the conventional acid-catalyzed thermal processes. The time required to complete the reaction using HBOB was found to be shorter than conventional methods. Recycling of the catalyst has been efficiently achieved using a simple procedure.

Selective Monoesterification of Malonic Acid Catalyzed by Boric Acid

2007 ◽  
Vol 60 (11) ◽  
pp. 821 ◽  
Author(s):  
Stephan M. Levonis ◽  
Laurent F. Bornaghi ◽  
Todd A. Houston
Keyword(s):  
Boric Acid ◽  
Malonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Acid Catalyzed

Boric acid catalyzes the monoesterification of malonic acid, likely through a chelation mechanism that is not available to the monoester product. Under more forcing conditions, diesters form to some extent, but conditions can be optimized to favour the monoester product (56–80%). With the easily handled solid acid catalyst, these reactions can be run with excess alcohol as solvent or with stoichiometric amounts of alcohol in acetonitrile with moderate heating.

Highly selective direct azidation of alcohols over a heterogeneous povidone–phosphotungstic solid acid catalyst

2016 ◽  
Vol 40 (12) ◽  
pp. 10240-10245 ◽  
Author(s):  
Sumit Kamble ◽  
Sagar More ◽  
Chandrashekhar Rode
Keyword(s):  
Room Temperature ◽  
Solid Acid ◽  
Phosphotungstic Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Product Yields ◽  
Acid Catalyzed

A heterogeneous povidone–phosphotungstic acid catalyzed direct selective azidation of alcohols gave excellent product yields at room temperature.

Efficient synthesis of diphenyl carbonate from dibutyl carbonate and phenol using square-shaped Zn–Ti–O nanoplates as solid acid catalysts

RSC Advances ◽  
2015 ◽  
Vol 5 (103) ◽  
pp. 84621-84626 ◽  
Author(s):  
Peixue Wang ◽  
Shimin Liu ◽  
Feng Zhou ◽  
Benqun Yang ◽  
Ahmad S. Alshammari ◽  
...  
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Solid Acid Catalysts ◽  
Diphenyl Carbonate ◽  
Acid Catalysts ◽  
Efficient Synthesis

Efficient synthesis of diphenyl carbonate from dibutyl carbonate and phenol using square-shaped Zn–Ti–O nanoplates as solid acid catalyst.

scholarly journals One-pot Three-component Synthesis of β-amino Carbonyl Compounds Using Nanocrystalline Solid Acid Catalyst

2013 ◽  
Vol 1 ◽  
pp. 194308921350716 ◽  
Author(s):  
Abbas Teimouri ◽  
Leila Ghorbanian
Keyword(s):  
Carbonyl Compounds ◽  
Organic Molecules ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Reaction Times ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
Efficient Synthesis ◽  
One Pot ◽  
The Mannich Reaction

This study presents a simple highly versatile and efficient synthesis of various β-amino carbonyl compounds in the Mannich reaction of acetophenone with aromatic aldehydes and aromatic amines in the presence of nanosulfated zirconia, nanostructured ZnO, nano-γ-alumina, and nano-ZSM-5 zeolites as the catalyst in ethanol at moderate temperature. The optical properties of the nanostructured organic molecules were studied. The advantages of methods are short reaction times, milder conditions, easy workup, and purification of products by nonchromatographic methods. The catalysts can be recovered for the subsequent reactions and reused without any appreciable loss of efficiency.

Nano-Sized and -Crystalline Sulfated Zirconia Solid Acid Catalysts for Organic Synthesis

2013 ◽  
Vol 757 ◽  
pp. 69-83
Author(s):  
Meghshyam K. Patil ◽  
Sharekh Shaikh
Keyword(s):  
Sulfated Zirconia ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Practical Significance ◽  
Synthesis Routes ◽  
Acid Catalyzed ◽  
Synthetic Methodologies ◽  
The Individual ◽  
Interesting Area

Sulfated Zirconia (SZ) has opened up a very interesting area for application predominantly as catalyst for various acid catalyzed organic syntheses and transformation reactions. Catalytic properties of SZ vary with methods of preparation. Lot of efforts is made to modify SZ to increase reactivity and stability of the catalyst. This review focuses on the individual synthesis routes to prepare nano-sized and –crystalline SZ, short discussion on its characterization and exhaustive survey on its utility in organic chemistry for the development of new synthetic methodologies, which provide simple direction having enormous practical significance. As can be realized, the nano-sized and –crystalline SZ as solid acid catalyst exhibits exceptionally better catalytic activity and selectivity for the synthesis of trisubstituted and tetrasubstituted imidazoles, acetyl salicylic acid, dypnone, esterification of acetic acid, caprylic acid and so on.

Polyvinyl trisulfonate ethylamine based solid acid catalyst for the efficient glycosylation of sugars under solvent free conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (127) ◽  
pp. 104715-104724 ◽  
Author(s):  
Avinash A. Chaugule ◽  
Amol R. Jadhav ◽  
Hern Kim
Keyword(s):  
Catalytic Activity ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Solvent Free ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Solvent Free Conditions ◽  
Acid Catalyzed

We have synthesized Brønsted solid acid catalysts which exhibited effective catalytic activity for acid catalyzed glycosylation reactions.

scholarly journals One-Pot Synthesis ofβ-Acetamido Ketones Using Boric Acid at Room Temperature

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Zahed Karimi-Jaberi ◽  
Korosh Mohammadi
Keyword(s):  
Boric Acid ◽  
Room Temperature ◽  
Simple Procedure ◽  
Condensation Reaction ◽  
Solid Acid Catalyst ◽  
Reaction Times ◽  
Acid Catalyst ◽  
One Pot ◽  
Green Catalyst ◽  
One Pot Condensation

β-acetamido ketones were synthesized in excellent yields through one-pot condensation reaction of aldehydes, acetophenones, acetyl chloride, and acetonitrile in the presence of boric acid as a solid heterogeneous catalyst at room temperature. It is the first successful report of boric acid that has been used as solid acid catalyst for the preparation ofβ-acetamido ketones. The remarkable advantages offered by this method are green catalyst, mild reaction conditions, simple procedure, short reaction times, and good-to-excellent yields of products.

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