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Review | Regular issue | Vol 83, No. 2, 2011, pp.275-291
Published online, 27th December, 2010
DOI: 10.3987/REV-10-685
Synthesis, Properties and Structures of Phosphorus-Nitrogen Heterocycles

Vasile Simulescu,* Eleonora Crasmareanu, and Gheorghe Ilia

*Department of Organic Chemistry, Institute of Chemistry, Timisoara of the Romanian Academy, 24 Mihai Viteazu Bvd., 300223-Timisoara, Romania

Abstract

The synthesis, properties and structures of heterocyclic molecules containing phosphorous and nitrogen are described in this review. A systematic synthesis of a ring compound needs one or more bifunctional starting molecules that react in a special way to form new bonds and to obtain the ring. Oligomers or polymers can be obtained besides other products resulting from leaving groups necessary to form the new bonds. Hydrazine for example is one of the simplest bifunctional compounds that must be able to introduce two vicinal nitrogen atoms into a cycle, as it will be shown further.