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Organic Chem Class #6b. OB: the mastering of organic esterification reactions + the rest of them

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organic chem class 6b

Organic Chem Class #6b

OB: the mastering of organic esterification reactions + the rest of them

Each student will choose an organic acid (1-10 carbons long), plus an alcohol (1-10 carbons long, make sure it’s a #1 alcohol please), and form HOH plus the proper ester. We’ll draw these neatly with color pencils (as practiced together first),

Then we’ll choose one more reaction (addition, substitution, fermentation, polymerization, or saponification) and draw out one nice looking example. All drawings will be reviewed as a classwork grade, and the best ones will be added to the website for review purposes.

slide2

Esterification: the chemical reaction between an organic acid + an alcohol to form an ester (and H2O).

Choose 1-10 acid and alcohol.

I choose pentanoic acid and methanol alcohol.

Draw acid first, “facing” the alcohol,

the alcohol is to be drawn HO- side facing the acid.

slide3

Pentanoic Acid + Methanol yields HOH + Methyl Pentanoate

CH3CH2CH2CH2COOH + HOCH3 HOH + CH3CH2CH2CH2COOCH3

O

HOH +

+

HO

C

C

C

C

C

C

OH

O

C

C

C

C

C

O

C

slide4

You must choose an acid and an alcohol and draw a full page diagram for it. Label it with words, and condensed structural formulas.

(you can’t choose mine, and don’t choose methyl methanoate because you’re too lazy to draw a few extra carbons + hydrogen atoms. We need a full mix if possible.

Then choose one other reaction, run it by me, then make a second poster as well.

Finally, finish up the reactions and drawings for your organic lab report today.