Synthesis of Isopentyl Acetate (Banana Oil) Using a...

Synthesis of Isopentyl Acetate (Banana Oil) Using a Fischer Esterification Reaction Zhenshu Wang (Stan) TA: Aaron League September 23, 2012 Purpose: The purpose of the experiment was to perform the acid-catalyzed Fischer Esterification of acetic acid and isopentyl alcohol to form isopentyl acetate, or banana oil, which is used in flavor industries. The equilibrium of the reaction was changed by adding an excess amount of acetic acid. The reaction was refluxed and product was purified by extraction and distillation. Isopentyl acetate was analyzed by infrared spectroscopy and 1H NMR spectroscopy. Reaction Scheme: Mechanism: Key features of the Fischer Esterification mechanism are: a. protonation of the carbonyl group, b. the†¦show more content†¦The boiling point was 129 oC which was lower than the literature boiling point, 142 oC. Analysis by infrared spectroscopy showed the impurity (most likely CH2Cl2) containing a carbon-chlorine bond. A good yield of isopentyl acetate was obtained during this experiment. Loss of the product was likely through transferring liquid from separatory funnel to the Erlenmeyer flask and residual material left in the distillation flask. Using an organic solvent like benzene or cyclohexane as a transfer agent would improve the yield, since their boiling points were around 80 oC and could be easily separated from the final product through simple distillation. However thisShow MoreRelatedSynthesis of Isopentyl Acetate Via Fischer Esterification Essay724 Words   |  3 PagesExperiment 1: Synthesis of Isopentyl Acetate via Fischer Esterification Introduction: Isopentyl acetate, banana oil, is a naturally occurring compound that has a very distinct and recognizable odor. It is most commonly found in bananas but also can be found in other organisms. The purpose of this lab was to synthesize the ester isopentyl acetate via an acid catalyzed esterification (Fischer Esterification) of acetic acid with isopentyl alcohol. Emil Fischer and Arthur Speier were the pioneersRead MoreBanana Oil Synthesis Report Essays1695 Words   |  7 PagesaMicroscale Synthesis of Isopentyl Acetate (Banana Oil) Objective: Carried out the microscale synthesis of isopentyl acetate by direct esterification of acetic acid and isopentyl alcohol. This was an acid catalyzed Fischer esterification. Both extraction and distillation were employed to obtain a pure product. IR spectroscopy and gas chromatography were used to determine purity of the final product. Reagents: * Compound: | * MW (g/mol): | * MP ( °C): | * BP ( °C): | * Density (g/mL):Read MoreSynthesis of Banana Flavor2281 Words   |  10 PagesSynthesis of Banana Flavor CHEMISTRY 200L EXPT 02 PAGE 01 - 11 Gerome B. Vallejos*, Ellis Mika C. Trino, Jahn Camille B. Valdez, Ariza Yamashita Department of Biological Sciences, College of Science Group 11 Corresponding author: gerome_911@yahoo.com Abstract The purpose of this experiment was to synthesize isopentyl acetate via Fischer esterification reaction between acetic anhydride and isoamyl alcohol, using concentrated sulfuric acid as a catalyst. This reaction is characterized by the combiningRead MoreSynthesis Of Isopently Acetate ( Banana Oil )1072 Words   |  5 PagesSynthesis of Isopently Acetate (Banana Oil) Deborah Nyabando CHEM 2311 TA: Nicholas Serratore February 20, 2014 Purpose: The purpose of doing this experiment was to prepare isopently acetate, an ester that has a pleasant smell like that of bananas from isopently alcohol and acetic acid by the Fischer esterification reaction. Sulfuric acid was used as a catalyst. Water, sodium bicarbonate, and sodium chloride were used to extract any impurities from the product. Simple distillation was then usedRead MoreSynthesis of Salicylic Acid and Potentiometric Determination of Its Purity and Dissociation Constant4209 Words   |  17 PagesSynthesis of Salicylic Acid and Potentiometric Determination of its Purity and Dissociation Constant ------------------------------------------------- Abstract The purpose of the study is to synthesize salicylic acid from the ester, methyl salicylate, and determine the acid’s dissociation constant and purity. The ester was converted to salicylic acid by base hydrolysis. The products were refluxed and recrystallized, to ensure maximum purity, and filtered, dried, and weighed. The melting point