Organic Chemistry - Classification of Organic Compounds

Description:

Acyclic or open chain compounds −  Also called aliphatic compounds, these consist of straight or branched chain compounds.

Example: Isobutane:CH₃CH(CH₃)CH₃, Acetone: CH₃COCH₃, Formic acid: HCOOH

Cyclic or closed chain compounds

• Alicyclic or closed chain compounds contain carbon atoms in the form of a ring (Homocyclic).

• When heteroatoms like N,S,O etc are present in the ring, it is called Heterocyclic.

Aromatic compounds − follow a set of conditions such as planarity and Huckel’s rule (which will be studied later). This includes benzene and other related ring compounds (benzenoid compounds).

• If a heteroatom is present in the ring, it is called heterocyclic compound (e.g., furan, thiophene, pyridine).

	Homocyclic	Heterocyclic
Non-Aromatic
Aromatic	Benzenoid aromatic compounds Non-benzenoid aromatic compounds Tropolone