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A Facile Synthesis for Novel Pyrimido[1,3,4]Triazepine

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An efficient route to the synthesis of novel fused pyrimidotriazepine derivatives using inorganic solid supports under MWs is described herein. The methodology uses microwave as an alternative heating source, which eliminates the usage of solvent during the course of reaction. With this environmentally benign approach, the reaction time is brought down from hours to minutes along with the yield enhancement. In addition, the catalytic role of different inorganic supports is studied for this [2+5] condensation reaction and montmorillonite K-10 clay is found to be the best solid support in terms of catalyst as well as an energy transfer medium.

Keywords: microwave; montmorillonite k clay; pyrimidotriazepine; solid support; thiobarbituric acid; thiosemicarbazone

Document Type: Review Article


Affiliations: Department of Chemistry, University of Delhi, Delhi-110007, India.

Publication date: August 1, 2005

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  • Letters in Organic Chemistry publishes original letters on all areas of organic chemistry including synthesis, bioorganic, medicinal, natural products, organometallic, supramolecular, molecular recognition and physical organic chemistry. The emphasis is placed on publishing quality papers very rapidly. Letters are processed rapidly and take full advantage of the Internet technology both for the submission and the review of the manuscripts.
    The journal is essential reading for all organic chemists both in academia and industry.

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