Chemistry 1.Which of the following reagents do you use to synthesize cyclohex-3-ene carboxylic acid methyl ester? A. cyclohexene B. 1,2-dimethyl-cyclohexa-1,4-diene C. 2-butene D. cyclohex-2-enol (These are the options provided) 2. With these reagents in mind, what would the equation of the main reaction be to get the product cyclohex-3-ene carboxylic acid methyl ester?
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- 2-Methyl-2-butene reacts with HBr in the presence of peroxide to give a. a secondary alkyl bromide. b. a primary alkyl bromide. c. a tertiary alkyl bromide. d. a vicinal dibromide.7) You want to synthesize 3-methyl-2-pentene from 2-chloro-3-methylpentane. Which reagent would you use? a. HCI, heat b. NH:(aq), 25°C c. CH:CO2NA, CH:CO2H, heat d. CH3CH2ONA, CH3CH2OH, heat e. CН:CH2ОН, heatCH2 H3C H3C COOH Reagents e. PB13 f. NaCN then H3O* g. NBS, CCI4 h. CrO3, H2SO4 а. HBr b. Mg, ether c. CO2, ether then H3O* d. BH3, THF then H2O2, OH"
- 1. Give balanced chemical equations for the following reactions: a. the oxidation of ethanol (two stages – use [O] in your equation but give name of the oxidising agent used in the reaction and any colour change you would see. b. the oxidation of propan-2-ol c. the dehydration of propan-2-ol d. the reaction of butylamine and hydrochloric acid (what type of reaction is this?)Reagents a. C6H5CHO b. NaOH, ethanol h. BrCH2CH=CH2 i. Na* OEt, ethanol j. Br2, H* k. K* t-BuO c. Pyrrolidine, cat. H* d. H2C=CHCN e. H3O* f. I. CH2(CO2ET)2 -CH2CH2CN LDA m. heat g. ELOC(=0)CO2ET Select reagents from the table to synthesize this compound from cyclopentanone. Enter the letters of the chosen reagents, in the order that you wish to use them, without spaces or punctuation (i.e. geda).The reaction of CH;CH=CH-CH=CH, with excess bromine gives chiefly 1,2-dibromo-3-pentene b. 3,4-dibromo-1-pentenc 1,4-dibromo-2-pentene d. 22. а. с. a mixture of the above three compounds none of the above three compounds е. 23. The formula for methyl ethanoate is which of the follow ing? a. с. H3C-C-o-CH,-CH3 H3C CH2-C CH3 b. d. H3C-CH-CH3 H3C C 0-CH3 OH
- What is the major product when 2-iodopentane is used in dehydrohalogenation reaction. A. 2-iodo-1-pentene B. 2-pentene C. (E)-2-pentene D. (Z)-2-pentene E. (Cis)-2-penteneGive the reagent or chemical test that would differentiate the following pairs ofcompounds (Reaction with Br2, Baeyer's reagent, Tollen's reagent). Write chemical equations for the reactions involved. a. benzene and ethylbenzeneb. 1-butyne and 2-butynec. 2-methylpentane and 2-methyl-2-pentened. toluene and 1-methylcyclohexene5.Synthesis. Make the following products from a suitable cyclic alkene starting material. Look at the functional group PATTERN present in the molecule, including stereochemistry. Br CH 3 Br CH3
- Give the products formed when benzaldehyde and benzoic acid are treated with the given reagents. a. Tollen’s reagentb. phenylhydrazine, H+c. HCNd. NH2OHe. 1 mole H2, Nif. 1 mole CH3OH, H+g. LiAlH4 then H2O, H+h. 2 moles CH3OH, H+i. CH3MgCl, then H2O, H+j. H2OFunctional groups such as alkynes react the same in complex molecules as they do in simpler structures. The following example of alkyne reaction were taken from syntheses carried out in the research group of E. J. Corey at Harvard University. You can assume that the reactions listed involve only the alkyne, not any of the functional groups present in the molecules. Draw the expected products for the following reaction .4.) Which functional group is absent from the fever-reducing active ingredient below? CH, H;CO A. aromatic B. ether C. carboxylic acid D. alcohol Keywords: functional group, carbonyl, aromatic, ether, carboxylic acid, alcohol, heteroatom, conugation, Huckel's Rule Concepts: Identification of organic functional groups