"Nucleophile" Essays and Research Papers

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    This lab will allows the comparison between elimination reactions under acidic and basic conditions through an analysis of two separate reactions: an acid-catalyzed dehydration of 1-butanol and 2-butanol using sulfuric acid and a dehydrobromination under basic conditions using potassium tert-butoxide of 1-bromobutane and 2-bromobutane. The products of all four reactions will be analyzed with gas chromatography‚ which separates organic compounds to see how each reaction’s product are formed under

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    Chemistry

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    Organometallic preparation and addition to carbonyls‚ Wittig reagent preparation and Wittig rxn‚ Wolff‚ H-based nucleophile carbonyl reduction‚ imine formation‚ reductive amination (rxn only)‚ ketal/acetal formation‚ dithiane chemistry (rxn only)‚ alpha-bromination of ketones‚ -COOH properties (the trends on HW4)‚ Fischer‚ acidic/basic hydrolysis of esters/amides/nitriles‚ CH2N2‚ acid chloride formation (rxn only)‚ acid chloride rxns with esters and amides. 2 Rxn of carboxyllic acid derivatives

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    Chemistry for Life Science

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    Faculty of Science Undergraduate Modular Scheme Session 2010/2011 Semester 1 Level 3 ------------------------------------------------- MODULE: SM0260: Chemistry for Life Sciences ------------------------------------------------- ------------------------------------------------- DATE: 17 January 2011 ------------------------------------------------- ------------------------------------------------- TIME: 14.00 – 16.00 Instructions to Candidates This paper contains

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    Preparation of Azo Dyes

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    UNIVERSITY OF SAN CARLOS DEPARTMENT OF CHEMISTRY NAME: Maniwang‚ Ma. Aiza C. DATE: March 21‚ 2011 COURSE: BS Chemistry II APPROVED: ___________ PREPARATION OF AZO DYES ABSTRACT In this experiment‚ the azo dyes p-nitrobenzene azoresorcinol and methyl orange were prepared by the azo coupling reaction. The p-nitrobenzene azoresorcinol dye was prepared from p-nitroaniline and resorcinol. The diazonium salt formed was from the reaction of the cold solution of dissolved p-nitroaniline

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    The bromide ion‚ which acts as the nucleophile attacks from the back-side and bonds to the carbon atom. As a result‚ 1-bromobutane is formed and water is given off as the leaving group. SN1 Reaction Mechanism: The reactions that take place in the second part of the experiment all take place by way of an SN1 reaction. All of the reactions proceed with the same mechanism. SN1 reactions occur under solvolysis conditions‚ where the solvent serves as the nucleophile. The slow‚ rate-determining step

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    t-Pentyl Chloride is a compound that is created through an SN1 nucleophilic substitution reaction in addition with Hydrogen Chloride in order to isolate the product. A variety of procedural techniques were utilized during the experiment including extraction‚ washing liquids‚ drying liquids‚ gravity filtration‚ and simple distillation. When a single solute or compound is transferred between two different solutes‚ it is known as extraction. Another technique that was utilized was washing‚ in which

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    Test 4, Ch 9,10,11

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    CHM 2210 – Fall 2012 – Test 4 Name (print):_________________________ 1. What is the IUPAC name for the following compound? a) b) c) d) 3-methyl-1-penten-4-yne 3-methyl-1-buten-4-yne 4-methyl-4-penten-1-yne 4-methyl-4-buten-1-yne 2. What is the major organic product obtained from the following reaction? 2 equiv Br2 a) b) c) d) 2‚3-dibromobutane 2‚2‚3‚3-tetrabromobutane 2‚3-dibromobutene 2‚2-dibromobutane 3. What is the best choice of reagent(s) to perform the following transformation

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    of aldehydes to primary alcohols. Borohydride‚ and Lithuim aluminum hydride are commonly used as reducing agents. We can note that both of these reagents have a (H-) anion‚ hence it will be a powerful base and also take the role of being the nucleophile. For the experiment sodium borohydride was used since its properties make it easier to be handled. In this experiment both the trans and the cis isomers of the 2-methylcyclohexanone were to be formed. This is due to the chiralty of the compound

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    the reaction to occur and to better control the stereochemistry and yield of the product‚ the metal hydride nucleophile of the reducing agents such as LiH‚ LiAlH4‚ or NaBH4 must be carefully chosen. Being that LiAlH4 and NaBH4 will not react with isolated carbon-carbon double bonds nor the double bonds from aromatic rings; the chosen compound can be reduce selectively when the nucleophile only react with electrophilic carbons. Figure 1: reduction mechanism for the reaction In this experiment

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    basic concepts questions

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    1. Predict the molecular formula of an alkane with 13 carbon atoms. .................................................................................................................................. [Total 1 mark] 2. Bromobutane‚ CH3CH2CH2CH2Br‚ can be reacted with hot aqueous sodium hydroxide to prepare butan-1-ol. CH3CH2CH2CH2Br + OH– → CH3CH2CH2CH2OH + Br– A student reacted 8.72 g of bromobutane with an excess of OH–. The student produced 4.28 g of butan-1-ol. (i) Calculate the amount

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