Heterocyclic Chemistry HETEROCYCLIC COMPOUNDS

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Presentation transcript:

Heterocyclic Chemistry HETEROCYCLIC COMPOUNDS CHEMISTRY OF HETEROCYCLIC COMPOUNDS Heterocyclic Chemistry

WHAT IS HETEROCYCLIC CHEMISTRY? What are carbocyclic compounds? cyclohexane benzene

Carbocyclic Compound Carboxylic Compound Aromatic Compound

What’s aheterocyclic compound? If the ring system is made up of carbon atoms and at least one other element, the compound can be classified as hetero cyclic. The elements that are found most commonly together with carbon in a ring system are Nitrogen (N), Oxygen(O), and Sulfur(S).

Heterocyclic Chemistry Heterocyclic compounds are organic compounds that contain a ring structure containing atoms in addition to carbon, such as sulfur, oxygen or nitrogen, as the heteroatom.

Heterocyclic Chemistry Heterocyclic classification It can be classified into Heteroaromatic Heteroalicyclic Heterocyclic compounds X

Heterocyclic Chemistry Heterocyclic classification 1- Aliphatic heterocycles :- Piperidine Oxirane

Heterocyclic Chemistry 2- Aromatic heterocycles :- a- six-membered aromatic hetrocycles Pyridine Pyrimidine

Heterocyclic Chemistry 2- Aromatic heterocycles :- b- five-membered aromatic hetrocycles Thiophen Furan

Heterocyclic Chemistry 2- Aromatic heterocycles :- c- bicyclic heteroaromatic compounds Indol Quinoline

Heterocyclic Chemistry Importantce and uses of Heterocyclic compounds:- Biosynthesized Essential for life ( haem, chlorophyll) Their metabolitis used as - toxin towords off predators - colouring agents to attact mates In general various important compounds such as:- alkaloids, vitamins, antibiotics, essential amino acids, hormones, drugs and dyes contain heterocyclic structure.

Heterocyclic Chemistry • in general: nucleic acids, amino acids (proteins), • feeding: proteins, carbohydrates, vitamins • alkaloids: nicotine, caffeine Application: • antibiotics (penicillins, sulfonamides) • insecticides (triazoles) • herbicides (triazines, pyridines)

Heterocyclic Chemistry 2/3 of all organic compounds are heterocyclic compounds

Heterocyclic Chemistry The main focus:- * Five-membered systems containing one heteroatom * Six-membered system containing one heteroatom

HETEROCYCLIC NOMENCLAUTURE