A Heterocycle in organic chemistry is a ring of connected atoms, where one or more atoms in ring are elements different from carbon. Heterocycles with Oxygen, Nitrogen and Sulfur are the most prevalent; Selenium, Boron, Arsenic and Phosphorus can also be incorporated.
In below infographic heterocycles includes: Ethylene Oxide, Tetrahydrofuran, Furan, Tetrahydropyran, 4H-Pyran, 1,4-Dioxane, Ethylene Imine, Pyrrolidine, Pyrrole, Imidazole, Pyrazole, Triazole, Piperidine, Pyridine, Pyrimidine, Pyridazine, Pyrazine, Ethylene Sulfide, Tetrahydrothiophene, Thiophene, Tetrahydrothiopyran, Oxazole, Thiazole, Morpholine. All above heterocycles explained with their molecular and structural formulae.
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Read full article on Heterocycles in Organic Chemistry and download pdf of this infographic on Compound Interest.