The reaction mixture initially was a brown color which then turned a milky white color with the addition of bromobenzene and ether. The mixture turned back to a brown color with the addition of the remaining bromobenzene and ether added at a dropwise rate. The reaction vessel became warm at this point. The mixture then turned a reddish‚ pink color with the addition of 9.1g benzophenone in 100mL anhydrous ethyl
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Experiment 1: Preparation of 1-Bromobutane and Reactivity of Alkyl Halides Objective: The purpose of this lab is to prepare 1-bromobutane from 1-butanol in an acid-catalyzed substitution reaction. While the reaction would be expected to occur as SN2 due to the primary nature of the substrate‚ because H2SO4 is used as a solvent‚ the conditions are very polar and the reaction can proceed via an SN1 reaction. The main objective is to obtain test results to determine the mechanism of the reaction
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CONCEPTS IN ORGANIC CHEMISTRY • Inductive Effect : Inductive effect is defined as permanent displacement of shared electron pair in a carbon chain towards more electronegative atom or group. Types of Inductive effect : 1.Negative Inductive Effect : (—I effect‚ Electron withdrawing effect) when an electronegative atom or group (more electro negative than hydrogen)is attached to the terminal of the carbon chain in a compound‚ the electrons are displaced in the direction of the attached
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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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Exp.11) Identification of unknown ketones. Introduction: Given five samples of a known ketone derivative‚ the purpose of this experiment is to identify which unknown ketone derivative corresponds to the five known samples. In other words‚ using specific methods of compound detection‚ it is possible to match an unknown compound with a known compound because similar compounds will display similar characteristics. In this experiment‚ identification of the unknown ketone is accomplished through thin
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CHM456 ORGANIC CHEMISTRY 1 LABORATORY Contact hours: 3 hours/week Laboratory textbook: Pavia‚ Lampman‚ Kriz and Engel‚ Introduction to Organic Laboratoy Techniques 3rd Edition (2011) ** Students MUST obtain a copy of the textbook Synopsis This is an organic chemistry practical course which reinforce the theory and concepts studied in Organic Chemistry 1 (CHM456). It covers the learning of simple laboratory techniques such as reflux‚ distillation‚ extraction‚ crystallization and melting point
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Firearms identification – Concerned mainly with determining whether a bullet or cartridge was fired by a particular weapon. It is not to be confused with ballistics - which is the study of a projectile in motion. Bullet Comparisons – The inner surface of the barrel of a gun leaves its markings on a bullet passing through it. The gun barrel is produced from a solid bar of steel that has been hollowed by drilling. The microscopic drill marks left on the barrel’s inner surface are randomly irregular
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some substrates took part in only one mechanism such as 2-chlorobutane whereas others took part in both mechanisms such as benzyl chloride. During the experiment it was noted that all the substrates besides 2-chlorobutane‚ t-butylchloride‚ and Bromobenzene underwent both SN1 and SN2 mechanisms. Our results varied from the predicted outcomes as many of our substrates took on both SN1 and SN2 mechanisms. One possible source of error would be due to the fact that even after vigorously cleaning test
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Grignard Reaction: Synthesis of Triphenylmethanol Dominic DiRaimo Lab Partners: Roxana Hernandez Somata Thach TA: Sreya Mukherjee December 5‚ 2013 Introduction Grignard reagents are good nucleophiles as well as strong bases (Weldegirma). It allows compounds to react with acidic compounds‚ therefor is must be free from acids as well as water during the desired reaction. Another important aspect of Grignard reagent is that refluxing is necessary to
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Mechanism for coupling reactions In this experiment‚ a Grignard reagent was prepared and reacted with benzophenone to synthesize triphenylmethanol‚ a tertiary alcohol (Figure 4). The Grignard reagent was prepared with dry magnesium turnings‚ bromobenzene and anhydrous ether. To isolate the alcohol‚ dilute acid was used to convert the magnesium salt to free alcohol and the mixture was washed with water and sodium chloride to remove remaining magnesium salt and water. Anhydrous sodium sulfate was
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