An Aldol Condensation Reaction: The Synthesis of Tetraphenylcyclopentadienone—An Example of a Double-Crossed Aldol Addition Reactions of Carbonyl Groups The chemical reactivity of aldehydes and ketones is closely associated with the presence of the carbonyl group in their structures. For example, both aldehydes and ketones undergo addition reactions such as the addition of a Grignard reagent to the carbonyl group as shown in Figure 1. Figure 1. Addition reactions. The reactions in
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using an aldol condensation reaction. The compound was purified by recrystallization. The product was characterized by analyzing melting point, TLC, IR spectroscopy, 1H NMR spectroscopy, and mass spectroscopy. Mechanism: Key features of the aldol condensation reaction mechanism: (1) the formation of an enolate by an acid-base reaction; (2) nucleophilic attack of the aldehyde by the enolate in a nucleophilic addition type reaction; (3) deprotonation of water by the alkoxide creating an aldol product
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Evaluation of L – Proline as a Catalyst for an Asymmetric Aldol Reaction Abstract This reaction is divided into two parts. In the first part acetone, L – proline and 4 – nitrobenzaldehyde are reacted to give (R)-4-hydroxy-4-(4-nitrophenyl)butan-2-one as the major product along with (S)-4-hydroxy-4-(4-nitrophenyl)butan-2-one. The identity of the product is confirmed by IR spectra of the product which gives peaks at 1073.94 cm-1, 1330 cm-1, 1515.05, 1600.13 cm-1, 1708.25 cm-1, 2930.82 cm-1and broad
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this experiment was to synthesize tetraphenylcyclopentadienone by reacting dibenzyl ketone with benzil in the presence of a base. The reaction proceeded via an aldol condensation reaction with dehydration, and then the product crystals were isolated by vacuum filtrations using a Buchner funnel. Experiment Scheme Equation 1. Aldol condensation reaction between benzil and dibenzyl ketone in the presence of a base To begin the experiment 1.5g of benzil, 12mL absolute ethanol and 1.5g of
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PARNTNER: COURTNEY DATE: JULY 8TH 2014. ALDOL CONDENSATION TO MAKE VANILIDENEACCETONE. DATA: REACTION: TABLE 1: DATA FROM EXPERIMENT | Vanillin | Acetone | Vanillindeneacetone | Chemical formula | C8H803 | C3H60 | C11H1203 | Molecular weight | 152.25 g/mol | 58.08 g/mol | 192.21g/mol | Density (g/cm3) | 1
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BLUE PRINT - CHEMISTRY - Higher Secondary – Second Year Time : 3 Hours Maximum Marks : 150 S.No 1. 2. 3. 4. 5. 6. OBJECTIVES Atomic Structure Periodic Classification p-Block elements d-Block elements f-Block elements Co-ordination and Bio-coordination compounds - KNOWLEDGE E/LA SA VSA 1(3) UNDERSTANDING O E / L A SA VSA 1(1) 1(5) 1(3) 1(3) 1(1) - APPLICATION SKILL O E/LA SA VSA O TOTAL 10 09 O E/LA SA VSA 1(5) 1(3) - 1(1) - - 1(5) - - 1(5) 1(5) 1(5)
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alkenes 2. Hydrogenation of alkynes 3. Reduction of alkyl halides 4. Coupling of alkyl halides (Wurtz reaction) 5. Hydrolysis of Grignard reagent Reaction: 6. Oxidation 7. Halogenation Cycloalkanes Preparation: 1. Carbene insertion 2. Simmons-Smith reaction 3. Modified Wurtz reaction 4. Dieckmann condensation Reaction: 5. Opening reactions of three- and four-membered rings 6. Halogenation 7. Oxidation Alkenes Preparation: 1. Dehydrohalogenation
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in ethanol it needed heat to dissolve. The Aldol condensation reaction consisted of mixing two unknowns, A345 (a liquid) and a B192 (a solid). Through a series of chemical tests, A192 is concluded to be a methyl ketone and B192 is an aldehyde. According to the Tollens Test, which tests for aldehydes, B192 turned gray while the liquid did not. In the Chromic acid test, which also tests for aldehydes, B192 turned into a green liquid while A345 had no reaction.
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formula is C6H5CH=CHCHO, it is in the family of aldehydes, and the Merck Index Number is 2297. Also, its structures are showed below: Structure: Ball and Stick Method Structural Formula And, a common reaction of Cinnamaldehyde is an aldol condensation reaction, which is the first reaction that occurs when Cinnamaldehyde is being synthesized to obtain commercial cinnamon. It is shown below: As stated previously, Cinnamaldehyde is found in the bark of an evergreen tree native to Southern
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Acetone From Wikipedia, the free encyclopedia Acetone[1] IUPAC name propanone Other names β-ketopropane, dimethyl ketone, dimethylformaldehyde, DMK, propanone, 2propanone, propan-2-one, β-ketopropane Identifiers CAS number [67-64-1] RTECS number AL31500000 SMILES InChI CC(=O)C 1/C3H6O/c1-3(2)4/h1-2H3 ChemSpider ID 175 Properties Molecular formula Molar mass Appearance Density Melting point Boiling point Solubility in water Acidity (pKa) Refractive index (nD) Viscosity
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