Efficient microwave-assisted regioselective one pot direct ortho-formylation of phenol derivatives in the presence of nanocrystalline MgO as a solid base catalyst under solvent-free conditions

2018 ◽  
Vol 42 (6) ◽  
pp. 4590-4595 ◽  
Author(s):  
Hossein Naeimi ◽  
Elham Zakerzadeh
Keyword(s):  
Microwave Irradiation ◽  
Solvent Free ◽  
Solid Base ◽  
Base Catalyst ◽  
Solid Base Catalyst ◽  
One Pot ◽  
Phenol Derivatives ◽  
Microwave Assisted ◽  
Solvent Free Conditions ◽  
Nanocrystalline Mgo

In this research, at first nanocrystalline MgO was prepared and then the solvent-free reactions of phenol derivatives with paraformaldehyde in the presence of the obtained nanocrystalline MgO as a new catalyst under microwave irradiation were investigated.

scholarly journals N-methylimidazole mediated synthesis of aryl alkyl ethers under microwave irradiation and solvent free conditions

2015 ◽  
Vol 80 (4) ◽  
pp. 459-464
Author(s):  
Hoorieh Djahaniani ◽  
Laila Aghadadashi-Abhari ◽  
Bita Mohtat
Keyword(s):  
Microwave Irradiation ◽  
Solvent Free ◽  
High Yield ◽  
Phenol Derivatives ◽  
Microwave Assisted ◽  
Novel Approach ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
Alkyl Ethers

Microwave-assisted three-component reaction has been established for the synthesis of aryl alkyl ethers. The reaction was carried out under solvent free conditions in the presence of N-methylimidazole and dialkylacetylenedicarboxylate to furnish a novel approach to O-alkylation of phenol derivatives in high yield

scholarly journals Microwave-Assisted, One-Pot Three Component Synthesis of 2-PhenylH-imidazo[1,2-α]pyridine

2012 ◽  
Vol 9 (3) ◽  
pp. 1047-1052 ◽  
Author(s):  
Kourosh Motevalli ◽  
Zahra Yaghoubi ◽  
Roghieh Mirzazadeh
Keyword(s):  
Microwave Irradiation ◽  
Solvent Free ◽  
One Pot ◽  
Microwave Assisted ◽  
Novel Synthesis ◽  
Solvent Free Conditions ◽  
Three Component Reaction

A novel synthesis of 2-phenylH-imidazio[1,2-α] pyridines is described from a one-pot, three-component reaction between pyridine, guanidine (urea or thiourea) and α-bromoketones under microwave irradiation and solvent-free conditions in excellent yields.

scholarly journals Tandem Fries Reaction–Conjugate Addition under Microwave Irradiation in Dry Media; One-pot Synthesis of Flavanones

1999 ◽  
Vol 23 (9) ◽  
pp. 574-575
Author(s):  
Firouz Matloubi Moghaddam ◽  
Mohammad Ghaffarzadeh ◽  
Seyed Hossein Abdi-Oskoui
Keyword(s):  
Microwave Irradiation ◽  
Silica Gel ◽  
Conjugate Addition ◽  
Solvent Free ◽  
Naphthalene Derivatives ◽  
One Pot ◽  
Fries Rearrangement ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Fries Reaction

An AICl3–ZnCl2 mixture supported on silica gel is found to be an efficient medium for the Fries rearrangement of acyloxybenzene or naphthalene derivatives in solvent-free conditions under microwave irradiation.

Microwave-Assisted Efficient, One-Pot, Three-Component Synthesis of 3,5-Disubstituted 1,2,4-Oxadiazoles under Solvent-Free Conditions.

ChemInform ◽  
2006 ◽  
Vol 37 (32) ◽  
Author(s):  
Mehdi Adib ◽  
Amin Haghighat Jahromi ◽  
Narjes Tavoosi ◽  
Mohammad Mahdavi ◽  
Hamid Reza Bijanzadeh
Keyword(s):  
Solvent Free ◽  
One Pot ◽  
Microwave Assisted ◽  
Solvent Free Conditions

Microwave-assisted synthesis of quinolones and 4H-1,4-benzo thiazine 1,1-dioxides

2005 ◽  
Vol 2005 (1) ◽  
pp. 27-28 ◽  
Author(s):  
Jaime Charris ◽  
Arthur Barazarte ◽  
José Domínguez ◽  
Neira Gamboa
Keyword(s):  
Microwave Irradiation ◽  
Rapid Method ◽  
Solvent Free ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Solvent Free Conditions

A rapid method for the preparation of N-aryl-2-methylthio-4-oxo-1,4-dihydro quinoline-3-carbonitriles (2a–e) and N-aryl-3-methylthio-4H-1,4-benzothiazine-2-carbonitrile 1,1-dioxides (2f–o) is reported. The cyclization is accelerated by microwave irradiation under solvent free conditions in the presence of K2CO3.

A One-Pot, Three-Component, Solvent-Free Synthesis of Novel 6H-Chromeno[3’,4’:5,6]Pyrido[2,3-d]Pyrimidine-Triones under Microwave Irradiation

2018 ◽  
Vol 42 (12) ◽  
pp. 604-607
Author(s):  
Loghman Firoozpour ◽  
Hoda Yahyavi ◽  
Ramona Ejtemaei ◽  
Setareh Moghimi ◽  
Alireza Foroumadi
Keyword(s):  
Microwave Irradiation ◽  
Efficient Method ◽  
Barbituric Acid ◽  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Substituted Benzaldehydes ◽  
High Yields ◽  
Solvent Free Synthesis

A green and efficient method for preparing novel heterocyclic systems is established through the reaction of differently substituted benzaldehydes, barbituric acid and 4-amino-2H-chromene-2-one under solvent-free conditions. This method affords 6H-chromeno[3’,4’:5,6] pyrido[2,3-d]pyrimidine-trione derivatives in high yields and short reaction times.

Microwave-assisted synthesis of 1,4-disubstituted thiosemicarbazides and semicarbazides under solvent-free conditions in the absence of catalyst

2005 ◽  
Vol 2005 (1) ◽  
pp. 71-72 ◽  
Author(s):  
Xi-Cun Wang ◽  
Zheng-Jun Quan ◽  
Zheng Li
Keyword(s):  
Microwave Irradiation ◽  
Solvent Free ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Solvent Free Conditions

Thirty-two 1-aroyl/aryloxyacetyl-4-(2-furoyl)thiosemicarbazides and corresponding semicarbazides were synthesised in excellent yields under microwave irradiation and solvent-free conditions without using any catalyst.

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