this reaction that oxidizes the alcohol to the ketone. The CuSO 4 is there to support the KMnO4. The oxidant reacts with the secondary alcohol which forms benzophenone and MnO2. Then the melting point of the hexanes will be identified. The reactant is a secondary alcohol therefore there would be no over-oxidization. The purity of the benzophenone by recrystallization will be analyzed using thin layer chromatography (TLC) analysis. Two TLCs is done in this experiment. The first TLC plate is just to
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Grignard reaction Abstract: In this laboratory‚ triphenylmethanol was synthesised from reacting benzophenone and bromobenzene using Grignard reaction. As the reaction was to set up to produce a Grignard reagent and then recrystallize it to obtain pure sample. The percentage yield obtained was 55% and its melting point was 161 co which is within the literature value 160-163 co. In addition to that the IR spectroscopy confirmed the molecule structure to be triphenylmethanol. Introduction: The Grignard
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Substance | Structure | M.W. g/mol | Density g/cm^3 | MP (C) | Hazards | Naphthalene | | 128.17 | 1.14 | 80.26 | White crystalline solid‚ with odor | benzophenone | | 182.217 | 1.11 | 47.9 | Barely hazardous‚ don’t get in contact with eyes or skin | Methanol | | 32.04 | 0.79 | -98 | Extremely flammable | Petroleum ether | | 86.18 | 0.77 | -95 | Extremely Flammable | Procedure: 1. 2. Add 80mg of naphthalene to Craig tube. Add few drops of methanol hot solvent. 3. Place tube
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Lab Section GTA Station 1. Grignard Reaction Post-lab report Fill out the appropriate sections below. Show all work. Your calculated answers need to match the answers in the table. Also‚ attach the benzophenone and product spectra. Indicate appropriate stretches including differences in both spectra. Results | | Amounts and units | |Initial volume
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was added to the round bottom flask drop-wise with additional washing of ~2.0 mL of diethyl ether. Iodine (catalyst) was added to facilitate the reaction. Phenylmagnesium bromide was obtained upon cooling of the solution to room temperature. Benzophenone (1.09 g) and diethyl ether (2.0 mL) mixture was then reacted with the Grignard product for 15 minutes. Red solidified adduct was observed. Next HCl (6.0 mL) was added drop-wise to the adduct; bilayer of triphenylmethanol and inorganic impurities
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Extraction and analysis of two compounds from unknown solution C ABSTRACT Liquid C and solid C were both extracted from unknown solution by first using chemically active liquid-liquid extract‚ followed by vacuum filtration. Liquid C and solid C were then purified with the use of simple distillation and recrystallization respectively. Through the process of recrystallization‚ the percentage purity of solid C was found to be 6.01%. The melting point range of purified solid C was 117.0 – 119
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Introduction There are about a million different kinds of seeds in our world with all of the different types of plants that we have. One type of seed that takes between three to five days to germinate is a daikon radish. The radish (Raphanus sativus ) originated from China. It was commonly seen and eaten by the people of Egypt long before the Egyptians started to construct their very own pyramids. Later on‚ radishes became a common vegetable to eat in Greece‚ and since the radish meant so much worth
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brown and cloudy. The conical vial was then rinsed with 2 ml of anhydrous ether to get any remaining solution into the reaction vessel. Simultaneously‚ 1.09 g of benzophenone and 2ml of anhydrous ether were added to a 3ml conical vial and gently stirred. The reaction vessel was taken off of the hot plate and allowed to cool. The benzophenone was then added to the reaction mixture while stirring vigorously. The conical vial was washed with anhydrous ether and transferred to the mixture. The reaction
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Lab II March 19‚ 2012 Abstract The purpose of this experiment was to synthesize the Grignard reagent‚ phenyl magnesium bromide‚ and then use the manufactured Grignard reagent to synthesize the alcohol‚ triphenylmethanol‚ by reacting with benzophenone and protonation by H3O+. The triphenylmethanol was purified by recrystallization. The melting point‚ Infrared Spectroscopy‚ 13C NMR‚ and 1H NMR were used to characterize and confirm the recrystallized substance was triphenylmethanol. Introduction
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E5 & E6 Extraction of Chlorophyll from Fresh Spinach and Investigation of the Photochemistry of Chlorophyll Chlorophyll a Chlorophyll b E5 - Extraction of Chlorophyll from Fresh Spinach E6 - Investigation of the Photochemistry of Chlorophyll The aim of this experiment is to investigate the photochemistry of chlorophyll. This experiment will be performed in two lab periods. In the first lab period you will extract chlorophyll‚ the green pigment in leaves‚ from spinach.
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