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  • Author: Mojtaba Lashkari x
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Mojtaba Lashkari, Malek Taher Maghsoodlou, Mahsa Karima, Belgais Adrom and Maryam Fatahpour

Abstract

A straightforward, one-pot multicomponent synthesis of 1-(benzothiazolylamino)methyl-2-naphthol derivatives was achieved by condensation of 2-naphthol, aldehydes, and 2- aminobenzothiazole catalyzed by a small amount of citric acid, which acts as a benign enviermentally catalyst. Mild conditions with excellent yields and a simple isolation procedure are noteworthy advantages of this method.

Open access

Mojtaba Lashkari, Reza Heydari and Farzaneh Mohamadpour

Abstract

The use of chromium(III) nitrate nonahydrate (Cr(NO3)3·9H2O) as an efficient, mild and economical catalyst for the one-pot three-component Biginelli synthesis of 3,4-dihydropyrimidin-2-(1H)-one/thione derivatives in the reaction between β-keto esters (methyl or ethyl acetoacetate), aromatic aldehydes (benzaldehye derivatives) and urea or thiourea under thermal and solvent-free conditions with good yields and short reaction times is reported. The most benefits of this synthetic method include the use of an efficient, eco-friendly, inexpensive and non-toxic catalyst, as well as the solvent-free conditions. All products were characterized by 1H NMR spectroscopy and melting point determination.

Open access

Fatemeh Noori Sadeh, Maryam Fatahpour, Nourallah Hazeri, Malek Taher Maghsoodlou and Mojtaba Lashkari

Abstract

The synthesis of some biologically important xanthenes, by efficient and convenient approach for one-pot condensation reaction of aldehydes and dimedone or β-naphthol in the presence of lactic acid as an efficient, inexpensive and environmental friendliness catalyst under solvent-free conditions, is presented. The merits of this reaction are higher product yields in shorter reaction time and environmentally benign reaction conditions.

Open access

Reza Heydari, Rohollah Rahimi, Mehrnoosh Kangani, Afshin Yazdani-Elah-Abadi and Mojtaba Lashkari

Abstract

The potassium carbonate was applied as a green and efficient catalyst for the one-pot synthesis of pyran annulated heterocyclic systems, via the condensation between aromatic aldehydes, malononitrile and dimedone/1-naphtole by a grinding method at room temperature and solvent-free conditions. Short reaction times, environmentally friendly procedure and excellent yields are the main advantages of this procedure which makes it more economic than other environmentally synthetic methods.