Synthesis Objective: The goal of this lab is to synthesize a Grignard reagent from bromobenzene and magnesium metal in diethyl ether. This same Grignard reagent would then be used to prepare a tertiary alcohol and then purify and characterize the product. Table of Reagents: Name Chemical formula Melting Point Boiling Point Density Safety Hazards Diethyl ether C4H10O -116.3°C 34.6°C 0.7134 g/ml Flammable Bromobenzene C6H5Br -30.6°C 156°C 1.5 g/ml Irritant. Avoid contact
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this reaction‚ isolate the adduct‚ and classify the diene from the melting point of its adduct. The unknown was one of four conjugated dienes. Maleic anhydride Observation and Data The three substances‚ anhydrous diethyl ether‚ maleic anhydride‚ and the eucalyptus oil combined a yellow mixture. The mixture produced a very strong scent. After heating the reaction under reflux for 45 min‚ crystals began to form when reaction was cooled to room temp. The crystals were white
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substituent of the triglyceride called trimyristin‚ which embodies 20-25% of the dried weight of ground nutmeg we will eventually use in this experiment. The purpose of this lab is to extract trimyristin from nutmeg with the organic substance‚ diethyl ether‚ to evidently produce trimyristin with a small portion of myristicin (solid-liquid extraction). Also‚ it is good to know that due to impurity the best way purify the product of trimyristin is by recrystallization through hot acetone. NATURE
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Synthesis and IR Analysis of trans-[Bis(inosinato)palladium(II)] Abstract In this lab we synthesized trans-[Bis(inosinato) palladium(II)] for IR analysis. After completion of the reaction 84.4% of the product was collected. IR spectrum of the product and inosine was analyzed to determine how the inosine is bonded to the metal‚ palladium. From the IR analysis‚ it was determined that when inosine reacts with palladium‚ a shift of about 65 cm-1 in the carbonyl stretch was observed. Introduction:
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simplest way to synthesize an ether is to have an alkoxide react with a primary haloalkane or a sulfonate ester under typical SN2 conditions. The scientist who developed this reaction‚ Alexander W. Williamson‚ was a professor at University College in London in the latter part of the 1800’s. This reaction has been around a while! Secondary haloalkanes and sulfonate esters are occasionally used in the Williamson ether synthesis but the yields are often poor. The ether prepared in this experiment is
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The Grignard Synthesis of Triphenylmethanol Abstract: Grignard synthesis of triphenylmethanol was achieved by use of the Grignard reagent phenyl magesium brominde. The organometallic grignard reagent was synthesized by use of a reflux apparatus recrystallization techniques. Once synthesized it was used in a Grignard reaction that involved nucleophilic addition to a carbonyl in order to make triphenylmethanol. The final product was solidified and recrystallized and spectral data was
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Abstract By separating chemicals out of a mixture and purifying them through sublimation and recrystiliation‚ changes in the substances physical properties can be shown. A salicylic acid-naphthalene mixture was mixed together with diethyl ether and saturated sodium bicarbonate. Two layers separated and were extracted after acidifying with HCl. This precipitated the crude salicylic acid. The left over mixture was combined with water and the two layers separated where crude naphthalene was recovered
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carbonyl group forming a new carbon-carbon bond. Grignard reagents when synthesized are very reactive and thus must be made in an environment free of water or any other potential proton donor. Thus in order to synthesize the grignard reagent it is run in ether which is unreactive with the grignard reagent. The grignard reagent works as a nucleophile in this experiment and when added to the ketone‚ benzophenone it reacts with the carbonyl and forms the triphenylmethanol. Then using experimental techniques
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Reagents Collection of hair samples 1. Stainless Steel Scissors 2. Plastic bags 3. Gloves 1. Hot water 2. Ethanol Washing the hair samples 1. Forceps 2. 100 ml beakers 3. Electronic weighing balance 4. Magnetic stirrer 5. Magnets 6. Filter paper 1. Diethyl Ether 2. Acetone 3. Deionised water 4. pH 6 Shampoo Digestion of hair
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photosynthesis. Methods The following materials were obtained to conduct this experiment: a capillary tube‚ beakers‚ extractions of leaf pigments in acetone‚ forceps‚ scissors‚ acetone‚ a quart jar with a lid containing solvent of petroleum ether and acetone and chromatography paper stapled into a cylinder marked with a pencil line about 1cm from one end. An extract of chloroplast pigments where obtained and a blender was used to rupture the cells. Pigments were then extracted with acetone
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