scholarly journals A Facile Synthesis of New 2-Amino-4H-pyran-3-carbonitriles by a One-Pot Reaction of -Bis(arylidene) Cycloalkanones and Malononitrile in the Presence of

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Zahed Karimi-Jaberi ◽  
Baharak Pooladian
Keyword(s):  
Reaction Times ◽  
Environmentally Friendly ◽  
Facile Synthesis ◽  
One Pot ◽  
One Pot Condensation ◽  
Environmentally Friendly Method

A rapid and environmentally friendly method is developed for the synthesis of a series of new substituted 2-amino-4H-pyran-3-carbonitriles through a one-pot condensation of malononitrile and -bis(arylidene) cycloalkanones in ethanol by using K2CO3as a catalyst. Short experimental reaction times, excellent yields, no need to use cumbersome apparatus for purification of the products, and inexpensiveness and commercially availability of the catalyst are the advantages of this method.

scholarly journals One-pot sequential synthesis and antifungal activity of 2-(benzylsulfonyl)benzothiazole derivatives

RSC Advances ◽  
2019 ◽  
Vol 9 (50) ◽  
pp. 29405-29413
Author(s):  
María Sol Ballari ◽  
Natividad Herrera Cano ◽  
Daniel A. Wunderlin ◽  
Gabriela E. Feresin ◽  
Ana N. Santiago
Keyword(s):  
Antifungal Activity ◽  
Reaction Medium ◽  
Environmentally Friendly ◽  
One Pot ◽  
Benzothiazole Derivatives ◽  
Environmentally Friendly Method

New antifungal agrochemicals, derived from 2-(benzylsulfonyl)benzothiazole were synthesized by an environmentally friendly method, using water as reaction medium.

Synthesis of Trans-6-(4-Chlorobenzoyl)-7-(Aryl)-1,3-Dimethyl-6,7-Dihydrofuro[3,2-d]Pyrimidine-2,4-Diones Using Choline Hydroxide as an Efficient Catalyst in an Aqueous Medium

2017 ◽  
Vol 41 (3) ◽  
pp. 139-142 ◽  
Author(s):  
Maryam Salari ◽  
Alireza Hassanabadi ◽  
Mohammad H. Mosslemin
Keyword(s):  
Aqueous Medium ◽  
Aromatic Aldehyde ◽  
Reaction Times ◽  
Efficient Synthesis ◽  
One Pot ◽  
Efficient Catalyst ◽  
Excellent Yield ◽  
One Pot Condensation

A green and efficient synthesis of the trans-6-(4-chlorobenzoyl)-7-(aryl)-1,3-dimethyl-6,7-dihydrofuro[3,2-d]pyrimidine-2,4-diones has been achieved via a three-component, one-pot condensation of 2-[2-(4-chlorophenyl)-2-oxoethyl)]isoquinolinium bromide with 1,3-dimethylbarbituric acid and an aromatic aldehyde in the presence of catalytic amounts of choline hydroxide in water under reflux conditions. This gives trans-6-(4-chlorobenzoyl)-7-(aryl)-1,3-dimethyl-6,7-dihydrofuro[3,2-d]pyrimidine-2,4-diones in excellent yield and in short reaction times.

scholarly journals Dowex 50W: A Green Mild Reusable Catalyst for the Synthesis of 2-Aryl Benzoxazole Derivatives in Aqueous Medium

2021 ◽  
Vol 37 (2) ◽  
pp. 341-347
Author(s):  
Arup Datta
Keyword(s):  
Aqueous Medium ◽  
Heterogeneous Catalyst ◽  
Environmentally Friendly ◽  
High Yield ◽  
Reusable Catalyst ◽  
One Pot ◽  
Simple Process ◽  
Effective Catalyst ◽  
Rapid Reaction ◽  
Environmentally Friendly Method

In this work simple efficient, one pot and environmentally friendly method was developed for the synthesis of 2-Aryl-1H-benzoxazole derivatives at 80º C using ortho-aminophenol and various aldehydes. It has been found that Dowex50W is an effective catalyst to prepare moderate to high yield of a variety of benzoxazole derivatives through a clean and simple process. Aqueous medium, green methodology, rapid reaction, reusability of heterogeneous catalyst are the great advantages of this protocol.

scholarly journals Efficient Synthesis of 1-Amidoalkyl-2-Naphthols by One-Pot, Three-Component Reaction under Solvent-Free Conditions

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Zahed Karimi-Jaberi ◽  
Marziyeh Jokar ◽  
S. Zoleykha Abbasi
Keyword(s):  
Trichloroacetic Acid ◽  
Reaction Times ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
One Pot Condensation ◽  
High Yields ◽  
Free Media

Two efficient and direct procedures have been developed for the preparation of 1-amidoalkyl-2-naphthols by a one-pot condensation of aldehydes, 2-naphthol, and amides in the presence of trichloroacetic acid or cobalt (II) chloride as catalyst. The reactions were carried out under solvent-free media. High yields, short reaction times, easy workup of the catalyst are advantages of these procedures.

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.

scholarly journals Three-Component One-Pot Condensation of 2-Hydroxy-1,4-Naphthoquinone with Aromatic Aldehydes and Methyl Carbamate: Synthesis of 4-aryl-3,4-Dihydronaphtho[3,4-e][1,3]Oxazine-2,5,10-Trione in Aqueous Media

2018 ◽  
Vol 42 (6) ◽  
pp. 291-293
Author(s):  
Nooshin Ghaffari-Nia ◽  
Alireza Hassanabadi
Keyword(s):  
Green Chemistry ◽  
Organic Solvent ◽  
Efficient Method ◽  
Aqueous Media ◽  
Reaction Times ◽  
Aromatic Aldehydes ◽  
One Pot ◽  
One Pot Condensation ◽  
Oxazine Ring ◽  
High Yields

A green and efficient method for oxazine ring formation is established using the reaction of 2-hydroxy-1,4-naphthoquinone and aromatic aldehydes with methyl carbamate catalysed by p-toluenesulfonic acid in aqueous media to afford 4-aryl-3,4-dihydronaphtho[3,4- e][1,3] oxazine-2,5,10-triones in excellent yields. The salient features of this protocol are short reaction times and high yields while avoiding any hazardous organic solvent. Therefore, this procedure could be classified as green chemistry.

Eco-Friendly Synthesis of 2-Substituted Benzimidazoles Using Air as the Oxidant

2013 ◽  
Vol 66 (2) ◽  
pp. 262 ◽  
Author(s):  
Guo-Feng Chen ◽  
Hai-Dong Shen ◽  
Hui-Ming Jia ◽  
Li-Yan Zhang ◽  
Hong-Yan Kang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Environmentally Friendly ◽  
Aromatic Aldehydes ◽  
Absolute Ethanol ◽  
One Pot ◽  
Mild Conditions ◽  
One Pot Condensation ◽  
The One

A simple, environmentally friendly procedure for the synthesis of 2-substituted benzimidazoles by the one-pot condensation of o-phenylenediamines with aromatic aldehydes using continuous bubbling of air in absolute ethanol at room temperature is described. The simplicity of the system, mild conditions, involvement of a non-toxic and practically inexhaustible oxidant, easy and quick isolation of the products, and moderate to good yields are the main advantages of this procedure.

scholarly journals One-Pot Synthesis of Benzoxanthenes in Solvent Free Condition using Chloroaluminate Ionic Liquids as Catalyst

2009 ◽  
Vol 5 (1) ◽  
pp. 575-580
Author(s):  
Sugat Kirti ◽  
Dhanraj T. Masram
Keyword(s):  
Ionic Liquid ◽  
Reaction Times ◽  
Catalytic Amount ◽  
Solvent Free ◽  
Imidazolium Chloride ◽  
One Pot ◽  
Free Condition ◽  
Solvent Free Condition ◽  
Solvent Free Conditions ◽  
One Pot Condensation

A mild and efficient method has been developed for the preparation of 14-aryl-14H dibenzo[a,j]xanthenes from one-pot condensation of aldehydes with β-naphthol using catalytic amount of Chloroaluminate ionic liquid (imidazolium chloride·3AlCl3 or pyridiniumchloride·3AlCl3) under thermal solvent-free conditions. Excellent yields, short reaction times, easy workup and reusability of the catalyst as well as solvent free conditions are advantages of this procedure.

Synthesis of polyethylene glycol-functionalized multi-walled carbon nanotubes with a microwave-assisted approach for improved heat dissipation

RSC Advances ◽  
2015 ◽  
Vol 5 (45) ◽  
pp. 35425-35434 ◽  
Author(s):  
Ahmad Amiri ◽  
Rad Sadri ◽  
Goodarz Ahmadi ◽  
B. T. Chew ◽  
S. N. Kazi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polyethylene Glycol ◽  
Heat Dissipation ◽  
Aqueous Media ◽  
Environmentally Friendly ◽  
One Pot ◽  
Microwave Assisted ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Environmentally Friendly Method

In order to improve the dispersibility of multi-walled carbon nanotubes (MWCNT) in aqueous media, MWCNT were functionalized with tetrahydrofurfuryl polyethylene glycol (TFPEG) in a one-pot, fast and environmentally friendly method.

Sign in / Sign up

Export Citation Format

Share Document