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Abstract:A simple procedure to prepare 1,5-disubstituted 1,2,3-triazoles efficiently from alkyl/aryl azides and -ketophos-

A tentative mechanism for a new dihalocyclopropane-dihalomethyl vinyl rearrangement is discussed following some isotopic labelling and substituted cyclohexene studies on fused cyclohexene-cyclopropane (norcarane) compounds.

The N‐substituted exo‐2‐oxazolidinone dienes are versatile molecules that undergo a variety of reactions. To further explore this versatility, Diels‐Alder reactions were carried out with novel naphthalene chalcones. Upon attempting the Diels‐Alder reaction with 2‐hydroxy‐1,4‐naphthoquinone, the formation of chromene unexpectedly took place via a formal [3+3] cycloaddition reaction. The observed reaction was then achieved with other 1,3‐dicarbonyl compounds.

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