Heterocyclic synthesis miscellaneous compounds

A few miscellaneous spiro heterocyclic compounds have been shown to act as substrates for the primary synthesis of regular quinoxalines. However, none of the following recent examples appears to have much potential as a preparative method. 

This section deals with transformations of heterocyclic rings and includes not only addition of carbenes and nitrenes, but also rearrangements frequently following these additions. Also included are topics such as the synthesis of Reissert compounds as well as miscellaneous oxidations and reductions. 

This review surveys molecules in which a phosphoms atom is embedded in a heterocychc core for the period starting in 2000 and ending in 2014. It focuses on pentavalent phosphoms heterocycles, specifically on phosphonate and phosphinate derivatives whatever the ring size (Figure 1), and with one carbon atom included in the heterocycle. The synthesis and the biological activity of the title compounds is particularly emphasized. The review is organized in four sections. Three of them deal with specific activities (anticancer, antiviral, and antibacterial), whereas the last section presents miscellaneous appHcations of such compounds. 

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