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The utility of nitrones in synthetic organic chemistry has been widely illustrated. The nitrone moiety can be regarded as a 3 centered dipolar 4 system, which enables 1,3-dipolar cycloaddition reactions with different dipolarophilic reagent to occur. 1,3-dipolar cycloaddition reaction between a nitrone and an olefinic dipolarophiles is an efficient method for the synthesis of isoxazolidine and isoxazoline ring systems. Nitrones are also versatile intermediates for the synthesis of natural products and many biologically interesting molecules. Owing to the labile nature of the N O bond under...

The Book entitled "Cycloaddition Reactions Using Greener Techniques and Applications" reports newly synthesized N-methyl & N-phenyl- -chloro nitrones from chlorohydrin and their cycloaddition reactions with different olefins, alkynes leading to the formation of regio and stereoselective cycloadducts following green chemistry methodologies. The book also reports about the synthesis of -chloro nitrone synthesized from dry distilled chloral and cycloaddition reactions leading to the formation of regio and stereoselective cycloadducts. Majority of the reactions have been carried out in water and...

Bhaskar Chakrabarti's poetry is synonymous with the romantic melancholia inherent to Calcutta. His trenchant poetic voice was one of the most significant to emerge in the 1960s and '70s--perhaps the most prolific period of modern Bengali poetry. Spanning the rise of militant leftism, the spread of crippling poverty across India, the war in Bangladesh, the influx of millions of refugees, the dark, dictatorial days of Indira Gandhi's reign, and the disillusionment of communist rule in Bengal, Chakrabarti's poems plumb the depths of urban angst, expressing the spirit of sadness and alienation in...

This book provides a comprehensive description of the application of clay minerals as disinfectants and the ingredients of medicines. While the presently available literature highlights one or two aspects of medicinal clays, a comprehensive text on all their major pharmaceutical applications is lacking. This book endeavors to fill up this lacuna. It further elucidates the properties of clay minerals that facilitate their application in the protection of human health, and how these properties are related to the chemical compositions and internal structures of selected mineral groups, thus...