‚ C-H str.‚ and C-H bend in the following molecules: 1. Benzaldehyde 2. Ethyl Benzoate 3. 3-Pentanone 4. Pentanal * For given unknown Infrared spectra‚ figure out the compounds based on the absorption frequencies of C=O str.‚ C-H str.‚ and C-H bend. DATA AND RESULTS: Assignments for unknowns A-D: Spectrum letter: | Compounds | A | 3-Pentanone | B | Ethyl Benzoate | C | Pentanal | D | Benzaldehyde | Comparison of Observed and Calculated
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be used when protecting the skin from the sun. In the experiment performed‚ dibenzalacetone was created from an aldol condensation of 2 portions of benzaldehyde and acetone in sodium hydroxide. The reaction that occurred in this experiment is known as a specific aldol condensation called Claisen-Schmidt. In the reaction‚ the carbonyl of benzaldehyde reacts quickly with the acetone anion to create a hydroxyketone that dehydrates in the presence of a base to give the desired product. 10 mL of 4M sodium
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dibenzylidene acetone by the reaction of benzaldehyde and acetone under the catalytic of alkalis. Dibenzylidene acetone is an important organic synthesis intermediate‚ which can be used to synthesize spices‚ pharmaceutical intermediates‚ sunscreen products and other fine chemicals. The reaction formula is stated as following: And the mechanism of this reaction is stated as following: Reagents and Apparatus: The reagents will be used in this experiment include benzaldehyde‚ 95% ethanol‚ 0.5M NaOH solution
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(ketone) * Benzaldehyde – positive * Acetophenone (aromatic ketone) * Tollen’s Test – Test for aliphatic and aromatic aldehydes * Silver mirror * Formalin – positive * Glucose – positive * Benzaldehyde – positive * Acetone * Fehling’s Test – Test for Aliphatic aldehydes * Brick red precipitate (cuprous oxide) * Formalin – positive * Glucose – positive * Benzaldehyde * Acetone
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Dibenzalacetone Leah Monroe May 15‚ 2003 Organic Chemistry Lab II Experiment performed on May 6 and 8‚ 2003 Abstract: The purpose of this experiment was to synthesize dibenzalacetone via an aldol condensation reaction between acetone and benzaldehyde. This was done by mixing the two reactants with NaOH and ethanol‚ then allowing the reaction to sit for thirty minutes. The crystals were then washed with water three times and recrystallized using ethanol. It was then characterized using melting
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Microwave Synthesis of 5‚10‚15‚20- Tetraphenylporphyrin Abstract: In this green chemistry experiment of 5‚10‚15‚20-tetraphenylporphyrin was synthesized from benzaldehyde and pyrrole. using microwave irradiation to heat the reactants.‚ The liquid reactants are absorbed on a solid support‚ silica gel‚ which acts as a Lewis acid catalyst to facilitate the reaction. The reaction forms a porphyrinogen‚ which is then oxidized to the porphyrin product by atmospheric oxygen. Column chromatography is performed
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Benzil Reduction Introduction The objective of the experiment was to reduce Benzil‚ using sodium borohyride as the reducing agent. In a benzil reduction‚ there are five possible products than can occur‚ specifically a racemic mixture of benzoin‚ racemic mixture of hydrobenzoin‚ or meso-hydrobenzoin. Therefore‚ three different tests were conducted in determining the identity of the product: melting point‚ thin light chromatography‚ and infrared spectroscopy. (a) Mechanism and reaction equation
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acetone with benzaldehyde. The synthesis began by using a strong base to generate the acetone enolate ion. The ketone/enol tautomerization is an equilibrium process that produces little of the enol (ppm or less). However‚ any enol that formed quickly reacted with the strong base to form the enolate ion. Therefore‚ the generation of the enolate drove this reaction to completion (Le Chatelier’s principle). Being a very strong nucleophile‚ this enolate attacked the carbonyl of benzaldehyde and formed
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University of Santo Tomas Faculty of Pharmacy Organic Chemistry Laboratory APPLICATION OF DIFFERENT KINDS OF TEST TO CLASSIFY HYROXY- AND CARBONYL-CONTAINING COMPOUNDS Jane Catherine SP. Villanueva‚ Edenn Claudine C. Villaraza‚ Lorenz Oliver C. Villegas and Cristel Bernice T. Wee Group 10 2G-Medical Technology Organic Chemistry Laboratory ABSTRACT Hydroxyl group refers to a functional group containing OH- when it is a substituent in an organic compound. It is also known as the characteristic
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Lab: Laboratory Manual Notes * Mohrig‚ Jerry R.‚ Christina Noring Hammond‚ and Paul F. Schatz. Techniques in Organic Chemistry. 3rd ed. N.p.: n.p.‚ 2010. Print. 4. Balanced Equations: Sytrene + Benzaldehyde Oxime OR OR Cis-Stilbene + Benzaldehyde Oxime OR OR Trans-Stilbene + Benzaldehyde Oxime OR OR 5. Reagents and Quantities: Reactant | MW (g/mol) | Grams | Moles | Molarity | Density (g/mL) | Volume (mL) | Cis-Stilbene | 180.25 | 0.6 | 0.6/180.25 = 0.003 | 0.33 M | 1.011 | 9
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