Esterfication Lab

Today we had a short class, so we tried out making our own Esters. The lab wasn't for marks, which didn't matter because it was fun!

Purpose: To synthesize an Ester from a carboxylic acid and an alcohol

We tried creating either an orange scent (Octyl Alcohol and Acetic Acid), a wintergreen scent (Methyl Alcohol and Salicylic Acid) or a raspberry scent (Isobutyl Alcohol and Formic Acid).

My group was able to come up with a slight wintergreen scent by the end of this short class.

We may get another chance to create our own esters. Fun!

Molecular Model Activity

Today since we had a short block due to the Mothers day tea, we had a fun activity!
In groups of 3 or 4, we were instructed to create as many of the molecules on a sheet of paper before time ran out. After completing each molecular model, we had to show it to Mr. Doktor to fill out.

Some organic compounds that we had to recreate were:

• Ethene
• 1,2,3,4 tetramethyl benzene
• 2 pentyne
• cyclopropane
• 3 ethyl 2,4 dimethyl pentane
• cis 2,3 dimethyl pentene
• 4,4 dimethyl 1 pentyne

and the list goes on and on.

Overall, it was a really fun class!

Report by Ren

MORE FUNCTIONAL GROUPS: CARBOXYLIC ACIDS AND ETHERS

Carboxylic Acids

-formed by the functional group:

 

-this is also the simplest Carboxylic Acids called METHANOIC ACID

-use standard rules but change the parent chain ending to "-oic acid"

Ethers

-an Ether contains an oxygen group connected to 2 alkyl (carbon) chains

-name the smaller alkyl group first, then the second alkyl group followed by "ether"

KETONES & ALDEHYDES (April 28th, 2011)

Today we learned about the awesome world of KETONES & ALDEHYDES

• A ketone is a hydrocarbon chain with a double bonded oxygen that is NOT on either end! (I repeat, the double bonded oxygens are not on the end, rather, are in the middle!
• An Aldehyde is a compound that has a double bonded oxygen at the END of the a chain.
• Follow standard rules and add -one to the parent chain for Ketones
• Follow standard rules and change the parent name ending to -al in Aldehydes

Propanone is a ketone. Propanal is an aldehyde. NOTE their endings and where the oxygens are bonded!

Lets try some examples shall we.......

Draw the structural diagrams for the following Ketones:

a) 2, 4 dimethyl 3 pentanone

b) 2 chloro 4 methyl 3 hexanone

c) 1,2,2 trichloro 4,4 difloro 3 butanone

Now try naming the following compound:

Highlight for answer: 2 ethyl 4 floro 2 methyl 3 hexanone

Getting it so far? Great! Let's try a couple of ALDEHYDES and we're all set for today.

*remember an aldehyde is a compound that has a double bonded oxygen at the END of a chain! So Oxygen atoms will be found on the ends of these chains, and will have an ending of -al to give us a clue

Name the following compound:

1) Count 4 carbons = Butane

2) Add ending "-al" to Butane = Butanal

Name of compound = Butanal

The simplest aldehyde is methanal otherwise known as FORMALDEHYDE:

Draw a structural diagram for

2,3 dibromo 4 propyl pentanal

That is all. Post by Ren Ren Flores