obtained: 0.250 g 5. Volume of water used as recrystallizing solvent: 2 mL 6. Mass of purified salicylic acid: 0.134 g 7. Percent yield of purified salicylic acid from reaction: 63.5% 8. Melting point of purified product: 158-160 oC 9. Name of NMR solvent used and its chemical shifts: Acetone-d6‚ the chemical shifts are 29.9 and 206.7 for 13C Questions: 1. 2. The phenol group of methyl salicylate is a weak acid‚ therefore it reacts very swiftly with a
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Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction Unknown Letter: B 23 April 2013 Academic Integrity Statement: “Experimental data may be collected with other students in organic chemistry labs. However I understand that sharing information required for a lab report (including but not limited to word processing or spreadsheet files‚ calculations‚ graphs‚ conclusions and additional problems at the end of the lab report) with other students is a violation of the University
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a seperatory funnel which resulted in a gas formation which was controlled with a condenser attached to a gas vacuum. The resulting mixture was then washed to remove excess acids and bases and rotovapped. DEET was synthesized from the experiment as NMR and IR data show strong peaks comparable to the literature values expected for DEET. The percent yield of the product at 56.1% could have been higher by adding more of the limiting reagent toluic acid. Introduction: In this experiment DEET is synthesized
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esterification is an acid-catalyzed condensation of an alcohol and a carboxylic acid‚ yielding an ester and water. Isopentyl Acetate has the scent of banana oil‚ once synthesized it will be purified by distillation. Then the analysis of the sample using H NMR and IR will determine purity of the product. Reaction Scheme: Mechanism: Fischer esterification is the acid catalyzed condensation of an alcohol and a carboxylic acid‚ where it is protonated at the carbonyl oxygen‚ then the nucleophillic attack
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2013 Date Submitted: March 14‚ 2013 Abstract: The product ratio of N-ethylsaccharin to O-ethylsaccharin that occurred due to alkylation with iodoethane at 80 oC was determined to be 81.5% to 18.5%‚ respectively‚ based on an analysis of the 1H NMR spectrum that was collected. The melting point range of 87.8-94.7 oC also indicated that the mixture was largely composed of N-ethylsaccharin. The more prevalent product structure is: C2H5I C2H5I And/Or And/Or
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enamine. This condition was leaded good yields (73.6%) without side reactions. Acylation gave an enol form (71.7%) and a keto form (28.3%) of 2-acetylcyclohexanone mixture‚ the composition of which was determined by 1H-NMR spectroscopy. Key words : pyrrolidine‚ enamine‚ mild condition‚ NMR 1. Introduction The formation reactions of carbon-carbon bonds are important in organic synthesis [1-5]. In general‚ acylation reaction is one of the important carbon-carbon forming reactions. It belongs to the
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Nair‚ M.G.‚ & Schutzki‚ R.A. (1997). Mosquitocidal compounds from Magnolia salicifolia. International Journal of Pharmacognosy‚ 35‚ 84–90. ´ ˇ Kubeczka‚ K.-H.‚ & Formacek‚ V. (2002). Essential Oil Analysis by Capillary Gas Chromatography and Carbon13 NMR Spectroscopy‚ England‚ second ed.‚ John Wiley & Sons Ltd. Miyazawa‚ M.‚ & Hisama‚ M. (2001). Suppression of Chemical Mutagen-Induced SOS Response by Alkylphenols from Clove (Syzygium aromaticum) in the Salmonella typhimurium TA1535/pSK1002 umu Test
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signal at 4.9 indicates that the alkane group must be attached with electronegative compound that shifted alkane group by “2”‚ and the signal at 2 indicate the alkane group must be attached with carbonyl group. Thus‚ all the information collected from NMR suggested that the product of fisher esterification was (1‚3-dimthylbutyl) acetate. A number of errors could have occurred in this experiment‚ which could have limited the amount of desired product yield. First‚ if not enough acid catalyst was used
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Introduction For the last week‚ specific tests had to be applied to determine the unknown solid that was given out randomly. Physical tests‚ solubility test‚ characteristic tests‚ NMR spectrums‚ and IR spectrums were all utilized to distinguish the identity of the solid. These assessments and a couple additional tests will be utilized again to determine the unknown liquid that was given to us in class. The other characteristics that will be looked at will be the boiling point‚ refracted index‚ and
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percent yield of products was determined to be 51%. The melting point of Crop 1 was found to be 110-115 °C‚ and Crop 2 was found to be 37-90 °C indicating impurity in both crops. TLC analysis shows a less polar compound in Crop 1 than in Crop 2. IR and NMR data provide proof of benzene with a nitro group is present in Crop 1. Introduction: In this experiment an electrophilic aromatic substitution is performed. This is done by having the benzene ring attacked by an electrophile creating a carbocation
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