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Oxone-mediated annulation of 2-aminobenzamides and 1,2-diaminobenzenes with sec-amines via imine-N-oxides: new syntheses of 2,3-dihydroquinazolin-4(1H)-ones and 1H-benzimidazoles

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Abstract

An efficient and mild method for the preparation of 2,3-dihydroquinazolin-4(1H)-ones and 1H-benzimidazoles by the oxone-mediated reaction of sec-amines via imine-N-oxides with 2-amino-N-substituted benzamides and 1,2-diaminobenzenes respectively in THF–water (2 : 1) at ambient temperature is described.

Graphical abstract: Oxone-mediated annulation of 2-aminobenzamides and 1,2-diaminobenzenes with sec-amines via imine-N-oxides: new syntheses of 2,3-dihydroquinazolin-4(1H)-ones and 1H-benzimidazoles

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Publication details

The article was received on 13 Dec 2017, accepted on 01 Feb 2018 and first published on 01 Feb 2018


Article type: Letter
DOI: 10.1039/C7NJ04939K
Citation: New J. Chem., 2018, Advance Article
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    Oxone-mediated annulation of 2-aminobenzamides and 1,2-diaminobenzenes with sec-amines via imine-N-oxides: new syntheses of 2,3-dihydroquinazolin-4(1H)-ones and 1H-benzimidazoles

    V. Sriramoju, S. Kurva and S. Madabhushi, New J. Chem., 2018, Advance Article , DOI: 10.1039/C7NJ04939K

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