Alicyclics and Aromatics

Now that you have been thoroughly befuzzeled by double and triple bonds in organic chemistry, lets confuse you even more!!! Todays topics are Alicyclics ( circular bonds) and Aromatics( mostly benzene).


Before we start, lets just go over the three ways that you can draw organic compounds:

1) Complete structural diagrams



These can be rather time and space consuming.....

2) Condensed Structural Diagrams


These are somewhat easier

3) Line Diagrams


These are the most simplistic way of drawing organic compounds


Alicyclics are carbon chains that form loops. When they form the parent chain or the side chain, normal naming rules apply with the addition of the prefix cyclo- .

Lets try some examples:

This is the simplest alicyclic, cyclopropane.



When you have side chains as well, standard naming rules apply but you can start counting anywhere in the ring, provided you end up with the smallest numbers possible. The occasion can also arise that the Alicyclic will be the side chain itself in which case you simply add the cyclo- to the beginning and -yl to the end of the stem.

Now name these three!!!


Aromatics ( Benzene)

Benzene(C6H6) is a unique cyclic hydrocarbon. Benzene looks like this.....



The lines indicate a double bond. Basically because there are 6 carbons and 3 double bonds, each carbon has a 1.5 bond which sounds kind of confusing but it allows Benzene to do some cool things because its electrons are free to roam.

Benzene can be a parent chain ( called Benzene) or a side chain ( called phenyl). 

Pour example:


This woulod be called 1 Methyl Benzene...... or Toulene( theres no reason for this name, its " just what chemists do" quoth Doktor)

But this...



would be 3 Methyl 1 Phenyl Butane

Comprende?

Thats all for today folks.