EUROPEAN JOURNAL OF
PHARMACEUTICAL AND MEDICAL RESEARCH

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An International Peer Reviewed Journal for Pharmaceutical, Medical & Biological Sciences

An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)

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Abstract

ULTRASOUND-PROMOTED SYNTHESIS OF 3,4-DIHYDROPYRIMIDIN-2(1H)-ONES IN PEG

Pravinsing S. Girase, Bhikan J. Khairnar, Deepak V. Nagarale and Bhata R. Chaudhari *

ABSTRACT

An efficient synthesis of 3,4-dihydropyrimidin-2(1H)-one/thione by using Ultrasound promoted Aluminium sulphate as a catalyst for aromatic aldehydes, 1,3-dicarbonyl compounds & (thio)urea in PEG as a reaction solvent is described. Compared with the classical Biginelli reaction conditions, this new method has the advantage of short reaction time with good yield. The procedure is simple, rapid and high yielding. The catalyst exhibited a remarkable reactivity and is reusable.

Keywords: 3,4-dihydropyrimidin-2(1H)-ones, Biginelli reaction, Aluminium sulphate, PEG, One-pot synthesis.


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