Cyclopropane is the smallest alicyclic compound. Cyclopropane is a Cycloalkane Molecule with the molecular formula C3H6 consisting of three Carbon Atoms linked to

An alicyclic compound is an organic compound that is both aliphatic and cyclic. An organic compound is any member of a large class of Chemical compounds whose Molecules contain Carbon. In Organic chemistry, compounds composed of Carbon and Hydrogen are divided into two classes Aromatic compounds which contain Benzene rings They contain one or more all-carbon rings which may be either saturated or unsaturated, but do not have aromatic character. In Chemistry, saturation has five different meanings In Physical chemistry, saturation is the point at which a Solution of a substance ^[1] Alicyclic compounds may or may not have aliphatic side chains attached.

Simple alicyclic compounds are the cycloalkanes cyclopropane, cyclobutane and cyclohexane. Cycloalkanes (also called naphthenes, especially if from Petroleum sources are types of Alkanes which have one or more rings of Carbon Atoms Cyclopropane is a Cycloalkane Molecule with the molecular formula C3H6 consisting of three Carbon Atoms linked to Cyclobutane, C4H8 with a molecular mass of 56107g/mol is a four Carbon Alkane in which all the Carbon Atoms are arranged Cyclohexane is a Cycloalkane with the Molecular formula C 6 H 12 A polycyclic cycloalkane is Decalin. Decahydronaphthalene (also known as decalin, or as bicyclodecane) a Bicyclic Organic compound, is an industrial Solvent. Bicyclic alkanes are norbornene and norbornadiene. bicyclic molecule contains two fused Aliphatic rings. Fusion can occur in three ways At two mutually bonded atoms or Across a sequence of atoms Norbornene or norbornylene or norcamphene is a bridged cyclic Hydrocarbon. Norbornadiene is a bicyclic Hydrocarbon. The molecule can be envisioned as a 14-cyclohexadiene bridged in the para positions by a Methylene group Spiro compounds have bicyclic connected through one carbon atom. A spiro compound is a Bicyclic Organic compound with rings connected through just one atom

The mode of ring-closing in the formation of many alicyclic compounds can be predicted by Baldwin's rules. Baldwin's Rules in Organic chemistry are a series of guidelines outlining the relative favourabilities of ring closure reactions in Alicyclic compounds

An exocyclic group is always placed outside the ring structure, take for instance the exocyclic double bond on the left:

See for an example isotoluene. The Isotoluenes in Organic chemistry are the non- Aromatic Toluene Isomers with an Exocyclic Double bond.

Cycloalkenes

Cyclohexene is an alicyclic compound with a double bond. Cyclohexene is a colorless clear Liquid Cycloalkene with an intense aversive characteristic sharp smell reminiscent of an Oil refinery.

Moncyclic Cycloalkenes are cyclobutene, cyclopropene and cyclohexene. A cycloalkene or cycloolefin is a type of Alkene Hydrocarbon which contains a closed ring of Carbon Atoms but has no aromatic Cyclobutene is a Cycloalkene with Chemical formula 46 and CAS number 822-35-5 Cyclopropene is an Organic compound with the formula 34 It is the simplest isolable Cycloalkene. Cyclohexene is a colorless clear Liquid Cycloalkene with an intense aversive characteristic sharp smell reminiscent of an Oil refinery.

The placement of double bonds in many alicyclic compounds can be predicted with Bredt's Rule. Bredt's rule is an empirical observation in Organic chemistry that states that a Double bond cannot be placed at the bridgehead of a bridged ring system unless the

References

1. ^ International Union of Pure and Applied Chemistry (1995). The International Union of Pure and Applied Chemistry ( IUPAC) (aɪjuːpæk or ay-yoo-pec) is an international Non-governmental organization "Alicyclic compounds". Compendium of Chemical Terminology Internet edition. Compendium of Chemical Terminology (ISBN 0-86542-684-8 is a book published by IUPAC containing internationally accepted definitions for terms in Chemistry.