scholarly journals (+)-CSA Catalyzed Multicomponent Synthesis of 1-[(1,3-Thiazol-2-ylamino)methyl]-2-naphthols and Their Ring-Closure Reaction under Ultrasonic Irradiation

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Emel Pelit ◽  
Zuhal Turgut
Keyword(s):  
Ultrasonic Irradiation ◽  
Sulfonic Acid ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Ring Closure ◽  
Multicomponent Synthesis ◽  
Effective Catalyst ◽  
Solvent Free Conditions ◽  
Naphthol Derivatives

New 1-[(1,3-thiazol-2-ylamino)methyl]-2-naphthols were obtained by condensation of 2-aminothiazole, aromatic aldehydes, and 2-naphthol in the presence of (+)-camphor-10-sulfonic acid ((+)-CSA) as an effective catalyst under ultrasound-promoted solvent-free conditions. The 1-[(1,3-thiazol-2-ylamino)methyl]-2-naphthol derivatives were converted in ring-closure reaction with formaldehyde to the corresponding naphthoxazine derivatives.

β-Cyclodextrin-butane sulfonic acid: an efficient and reusable catalyst for the multicomponent synthesis of 1-amidoalkyl-2-naphthols under solvent-free conditions

2015 ◽  
Vol 17 (5) ◽  
pp. 3141-3147 ◽  
Author(s):  
Kai Gong ◽  
Hualan Wang ◽  
Xiaoxue Ren ◽  
Ying Wang ◽  
Jinghua Chen
Keyword(s):  
Sulfonic Acid ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Solvent Free Conditions

β-Cyclodextrin-butane sulfonic acid efficiently catalyzed the synthesis of 1-amidoalkyl-2-naphthols by a one-pot three component condensation of aromatic aldehydes, β-naphthol and amides under solvent-free conditions.

scholarly journals A Facile Solvent-Free Route for One-Pot Multicomponent Synthesis of Benzylpyrazolyl Coumarins Derivatives in Presence of Effective Synergetic Catalytic System

2019 ◽  
Vol 31 (6) ◽  
pp. 1357-1361 ◽  
Author(s):  
NARENDRA R. KAMBLE ◽  
VINOD T. KAMBLE
Keyword(s):  
Room Temperature ◽  
Silver Salt ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Niobium Pentachloride ◽  
Solvent Free Conditions ◽  
Work Up ◽  
Solvent Free Reaction

A combinatorial library of benzylpyrazolyl coumarin derivatives have been synthesized by a green one-pot four-component reaction between aryl hydrazine/hydrazine hydrate (1), ethyl acetoacetate (2), aromatic aldehydes (3) and 4-hydroxycoumarin (4) catalyzed by niobium pentachloride with silver salt under solvent-free conditions has been developed. Experimental simplicity, simple work-up procedure and solvent-free reaction condition at room temperature are important features of the present protocol.

scholarly journals Retracted Article: An efficient one pot three-component synthesis of 2,4,6-triarylpyridines using triflimide as a metal-free catalyst under solvent-free conditions

RSC Advances ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 5158-5163 ◽  
Author(s):  
Hongshe Wang ◽  
Weixing Zhao ◽  
Juan Du ◽  
Fenyan Wei ◽  
Qi Chen ◽  
...  
Keyword(s):  
Ammonium Acetate ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
One Pot ◽  
Metal Free ◽  
Effective Catalyst ◽  
Solvent Free Conditions ◽  
Retracted Article

A simple and efficient protocol developed for one pot three-component synthesis of 2,4,6-triarylpyridines from aromatic aldehydes, substituted acetophenones and ammonium acetate using triflimide (HNTf2) as an effective catalyst is described.

scholarly journals One-pot Synthesis of Benzo[c]acridine Derivatives Using SBA-Pr-SO3H as Nano Catalyst

2017 ◽  
Vol 58 (2) ◽  
Author(s):  
Ghodsi Mohammadi Ziarani ◽  
Somayeh Mousavi ◽  
Mahshid Rahimifard ◽  
Alireza Badiei
Keyword(s):  
Sulfonic Acid ◽  
Condensation Reaction ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
One Pot ◽  
Acridine Derivatives ◽  
One Pot Synthesis ◽  
Nano Catalyst ◽  
Solvent Free Conditions

One-pot synthesis of benzo[<em>c</em>]acridine derivatives via the three-component condensation reaction of aromatic aldehydes, 1-naphtylamine, and dimedone using sulfonic acid functionalized SBA-15 (SBA-Pr-SO<sub>3</sub>H) as nanoporous acid catalyst under solvent-free conditions was studied. This reaction is an efficient, green and  environmentally friendly procedure.

scholarly journals One-Pot Synthesis of 2′-Aminobenzothiazolo-Arylmethyl-2-Naphthols Catalyzed by NBS under Solvent-Free Conditions

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Wei Lin Li ◽  
Li Li Wang ◽  
Qiu Yan Luo
Keyword(s):  
Aromatic Aldehydes ◽  
Solvent Free ◽  
One Pot ◽  
Efficient Catalyst ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
The One ◽  
Naphthol Derivatives

To develop a new facile protocol for the synthesis of 2′-aminobenzothiazolo-arylmethyl-2-naphthol derivatives, N-bromosuccinimide (NBS) was used as an efficient catalyst for the one-pot synthesis of 2′-aminobenzothiazolo-arylmethyl-2-naphthols in excellent yields fromβ-naphthol (1 mmol), aromatic aldehydes (1 mmol), and 2-aminobenzothiazole (1 mmol) at 60°C under solvent-free conditions.

scholarly journals Solvent-Free Synthesis of 1,8-Dioxo-octahydroxanthenes and 14-Aryl-14H-dibenzo[a,j]xanthenes using Saccharin Sulfonic Acid as an Efficient and Green Catalyst

2012 ◽  
Vol 9 (4) ◽  
pp. 1854-1863 ◽  
Author(s):  
Abdolkarim Zare ◽  
Mohammad Mokhlesi ◽  
Alireza Hasaninejad ◽  
Tahereh Hekmat-Zadeh
Keyword(s):  
Sulfonic Acid ◽  
Reaction Times ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Organic Transformations ◽  
One Pot ◽  
Green Catalyst ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Solvent Free Synthesis

Saccharin sulfonic acid (SaSA) is utilized as a highly efficient, green and inexpensive sulfonic acid-containing catalyst for the following one-pot multi-component organic transformations: (i) the condensation of dimedone (2 eq.) with aromatic aldehydes (1 eq.) leading to 1,8-dioxo-octahydroxanthenes, and (ii) the reaction of 2-naphthol (2 eq.) with arylaldehydes (1 eq.) leading to 14-aryl-14H-dibenzo[a,j]xanthenes. In these protocols, the title compounds are produced in high to excellent yields and in relatively short reaction times under solvent-free conditions.

Ultrasound mediated synthesis of α-aminophosphonates and 3,4-dihydropyrimidin-2-ones using graphene oxide as a recyclable catalyst under solvent-free conditions

RSC Advances ◽  
2014 ◽  
Vol 4 (86) ◽  
pp. 45831-45837 ◽  
Author(s):  
Tamalika Bhattacharya ◽  
Biju Majumdar ◽  
Deepa Dey ◽  
Tridib K. Sarma
Keyword(s):  
Graphene Oxide ◽  
Ultrasonic Irradiation ◽  
Recyclable Catalyst ◽  
Solvent Free ◽  
Multicomponent Synthesis ◽  
Solvent Free Conditions

Graphene oxide functions as an effective and reusable carbocatalyst for the multicomponent synthesis of α-aminophosphonates and 3,4-dihydropyrimidinones under solvent-free conditions using ultrasonic irradiation.

Chlorosulfonic Acid Supported Piperidine-4-carboxylic Acid (PPCA) Functionalized Fe3O4 Nanoparticles (Fe3O4-PPCA): The Efficient, Green and Reusable Nanocatalyst for the Synthesis of Pyrazolyl Coumarin Derivatives under Solvent-Free Conditions

2019 ◽  
Vol 22 (2) ◽  
pp. 123-128
Author(s):  
Setareh Habibzadeh ◽  
Hassan Ghasemnejad-Bosra ◽  
Mina Haghdadi ◽  
Soheila Heydari-Parastar
Keyword(s):  
Carboxylic Acid ◽  
Fe3o4 Nanoparticles ◽  
High Efficiency ◽  
Reaction Times ◽  
Chlorosulfonic Acid ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Magnetic Nanocatalyst ◽  
One Pot ◽  
Solvent Free Conditions

Background: In this study, we developed a convenient methodology for the synthesis of coumarin linked to pyrazolines and pyrano [2,3-h] coumarins linked to 3-(1,5-diphenyl-4,5- dihydro-1H-pyrazol-3-yl)-chromen-2-one derivatives using Chlorosulfonic acid supported Piperidine-4-carboxylic acid (PPCA) functionalized Fe3O4 nanoparticles (Fe3O4-PPCA) catalyst. Materials and Methods:: Fe3O4-PPCA was investigated as an efficient and magnetically recoverable Nanocatalyst for the one-pot synthesis of substituted coumarins from the reaction of coumarin with a variety of aromatic aldehydes in high to excellent yield at room temperature under solvent-free conditions. The magnetic nanocatalyst can be easily recovered by applying an external magnet device and reused for at least 10 reaction runs without considerable loss of reactivity. Results and Conclusion: The advantages of this protocol are the use of commercially available materials, simple and an inexpensive procedure, easy separation, and an eco-friendly procedure, and it shows good reaction times, good to high yields, inexpensive and practicability procedure, and high efficiency.

Sign in / Sign up

Export Citation Format

Share Document