Assistant Professor in Organic Chemistry,
*Corresponding Author E-mail: dr.nagham_mj@yahoo.com
In this survey, all types of cyclic compounds (aliphatic and aromatic) which containing one or more heteroatoms like (sulfur, nitrogen, oxygen, selenium,) various Membered Rings, methods of preparations, reactions, stability, strain of angle, some of applications, comparison of stability, nomenclature.
Types of cycles, hetero atom, heteroaromatic, organometallic
