Lab5 - H arji t Kaur Che 202 Ex 5 Preparation of synthetic...

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Harjit Kaur Che 202 Ex 5 Preparation of synthetic banana oil I A. The purpose of the experiment was to synthesize banana oil known by several chemical names such as isopentyl acetate, isoamyl acetate, and ethanoate using isopentyl alcohol and acetic acid. The ester can be prepared economically by Fisher esterification, which involves the combination of an acid catalyst. The acid catalyst is used to increase the rate of the reaction, which would otherwise require a much longer reaction time. B. II A. A 20.0mmole of isopentyl alcohol was added to a 5-ml conical vial. About 40 mmole of galactic acid was added to the solution, and carefully stirred as six drops of concentrated sulfuric acid was then added. Then the solution was heat under a gentle reflux with a water-cooled condenser for one hour. The solution is then monitored as it reflux and the heat applied to it was reduced from time to time as the reflux rose to about 2cm of the top of the condenser. After heating, the reaction was cooled to nearly room temperature. Then it was transferred to a screw-cap centrifuge tube with the aid of 6ml of water. The reaction was washed with water, and then the aqueous layer was removed. The organic layer, which was left in the centrifuge tube, was
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Lab5 - H arji t Kaur Che 202 Ex 5 Preparation of synthetic...

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