Synthesis of Novel 2-(4-Oxo-3,4- Dihydroquinazolin-2-Ylsulfinylmethyl)-3H-Quinazolin-4-One

Abstract

Condensation of 2-mercapto-3H-quinazolin-4-one (1) with chloroacetic acid gave 4-oxo-3,4-dihydroquinazoline-2-yl-sulfanyl)-acetic acid (2) that with anthranilamide (3) gave 2-(4-oxo-3,4-dihydroquinazolin-2-ylsulfanylmethyl)-3H-quinazolin-4-one (4). Oxidation of 4 with sodium hypochlorite in alkaline medium gave the novel product, 2-(4-oxo-3,4- dihydroquinazolin-2-ylsulfinyl methyl)-3H -quinazolin-4-one) (5). The entire sequences of reactions in this work have been carried out using eco-friendly solvents and green conditions.

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GRAPHICAL ABSTRACT

Keywords:

• Anthranilamide
• 2-Thioquinazolinone
• 2-Chloromethyl-3H-quinazolin-4-one
• chloroacetic acid
• triethylamine

Acknowledgments

The authors are indebted to the University Grants Commission, Govt. of India, New Delhi, for financial support. They are also thankful to the authorities of Jawaharlal Nehru Technological University, Hyderabad, for providing laboratory facilities.