Cooksey‚ C.‚ & Tsai‚ B. (2010‚ October 5). Spectrophotometry 3. J. D. J. Ingle and S. R. Crouch‚ Spectrochemical Analysis‚ Prentice Hall‚ New Jersey (1988) 4. International Union of Pure and Applied Chemistry (IUPAC) Glossary of terms used in photochemistry. Recommendations 1988 (Braslavsky‚ S. E. & Houk‚ K. N.‚ eds) Pure Appl. Chem. 60‚ 1055-1106 (1988). An updated version‚ edited by J. W. Verhoeven‚ has appeared in Pure Appl. Chem. 68‚ 2223-2286 (1996)
Premium Electromagnetic radiation Electromagnetic spectrum
Grignard Synthesis of Triphenylmethanol Aim The aim of this experiment was to prepared Grignard reagent (phenylmagnesium bromide) from bromobenzene and magnesium‚ to use the reagent prepared to synthesise a tertiary alcohol (triphenylmethanol) by reacting reagent and ester (methyl benzoate)‚ and the product formed is analyse by infrared spectroscopy (IR)‚ melting point‚ thin layer chromatography (TLC)‚ gas chromatography mass spectrum (GCMS) and finally Nuclear Magnetic Resonance spectroscopy. Introduction
Premium Nucleophile Magnesium Alcohol
Lab #5: Grignard Reaction – Synthesis of Triphenylmethanol John Kang Chem 152L Performed: 7/20/04 Date submitted: ________________ Lab Partners: Sang Lee‚ Vicky Lai TA: John Stanko Abstract: This experiment explored the synthesis of triphenylmethanol through the use of Grignard reagents. The percent yield of the product was 10% on a relatively humid day. The melting point was calculate to be 127.2oC with a literature value of 162oC. An IR spectrum of the product was taken and used
Premium Oxygen Chemical reaction Alcohol
Organic Chemistry II Laboratory (ABCT357) Although studying fundamental theories of chemistry in the class is important to understand the concept of chemistry‚ carrying out experiments to corroborate the theories is also important. It is very important for students to get used to experiments in order to speed up their experiments. Expt.1. Acetylation of α-D-glucopyranose Add slowly 2.5 g (0.014 mol) of powdered D-glucose in small portions (roughly in 7-10 portions and 5 min for each addition)
Premium Acetic acid Carboxylic acid Nuclear magnetic resonance
Abstract: The purpose of this laboratory is to convert benzophenone to diphenylmethanol. This was done by using sodium borohydride to reduce benzophenone. The product was then crystalized from hexanes then using the melting point and IR testing it was possible to characterize it. The melting point range was… Introduction: This lab is possible because of oxidation and reduction reactions. In organic chemistry oxidation is the loss of electron density around a carbon‚ while reduction is an increase
Premium Chemistry Hydrogen Carbon
Abstract: The purpose of this lab is to prepare phenylmagnesium bromide‚ a Grignard reagent‚ and react it with benzophenone to give triphenylmethanol. Once made‚ the Grignard reagent will do a nucleophilic attack on the carbonyl carbon of the ketone‚ benzophenone. The result is an alkoxide that is then protonated to give the alcohol‚ triphenylmethanol. The purity of the final product will then be considered by melting point and IR spectroscopy. Final purified triphenylmethanol weighed 8.02 grams
Premium Diethyl ether Magnesium Nucleophile
slight polarity to the molecule‚ making it a little polar‚ although mostly nonpolar. Biphenyl‚ which is completely nonpolar‚ will have similar solubilities as benzophenone: insoluble with water (polar)‚ partially soluble with methanol (intermediate polarity) and soluble with hexane (nonpolar). But with biphenyl (unlike with benzophenone) the solubilities are exactly as expected‚ because of biphenyl’s complete nonpolarity. But that explains any differences in solubilities between the two molecules
Premium Alcohol Solubility Chemical polarity
possibility of color change emanating from a reduction in the particle size during grinding should be ruled out. Similarly‚ the color change shown in different solvents is called as "solvatochromism." Added to this is the input from the branch of photochemistry called photochromism that represents light induced color transitions. Other areas such as "electrochromism" (color changes caused by electricity) are also emerging. Applications There are many applications where the temperature at which
Premium Energy Heat Temperature
Biocatalysis and Biotransformation Redesigning existing enzymes by protein engineering Metabolic engineering for multistep biotransformation Cyanide Biotransformation Redesigning existing enzymes by protein engineering WHAT IS PROTEIN ENGINEERING??? It is a process of developing useful or valuable proteins which involves * Modification of existing enzymes * Production of new enzymes In other words‚ the design and construction of new proteins or enzymes with novel or desired functions
Premium Enzyme Carboxylic acid Metabolism
Hexane (solvent) Benzophenone Malonic Acid Biphenyl 2) There should be a difference in the results between the solubilities of biphenyl and benzophenone in methyl alcohol. Explain why there is this difference. If no difference was observed‚ then predict which one should be more soluble and explain why. (4 points) 3) There should be a difference in the results between the solubility of benzophenone in methyl alcohol
Premium Solvent Ethanol