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- From what you have learned about enols and the hydration of alkynes, predict what product is formed by the acid-catalyzed hydration of CH3CH2CH2C = COCH3. Draw a stepwise mechanism that illustrates how it is formed.Identify the major products in the following reactions: Product A? Product B?One step in the synthesis of the antihistamine fexofenadine (Section 23.5) involves acid-catalyzed hydration of the triple bond in A. Draw a stepwise mechanism for this reaction and explain why only ketone B is formed.
- Which of the following set of reagents will make cyclobutamine from bromocyclobutane? a NaN3 / ethanol and LiAlH4 in ether solution b NH3 and NaBH4 in ethanol solution c NaCN and LiAlH4 in ether solution d NH3 and H2 /PdIdentify product C and provide an arrow pushing mechanismAn unknown compound A of molecular formula C10H18O reacts with H2SO4 to form two compounds (B and C)of molecular formula C10H16. B and C both react with H2 in the presence of Pd-C to form decalin. Ozonolysis of B forms D, and ozonolysis of C forms a diketone E of molecular formula C10H16O2. Identify the structures of compounds A, B, C, and E.
- Explain briefly by illustrations the chemistry behind each answer 1. Preamble :A reaction flask contains a 2-bromopentane in an ethanolic solution of sodium ethoxide at room temperature and results in the formation of two olefinic products(1-pentene and 2-pentene) I) What reaction pathway is followed by the reaction above?A. E2 dehydrohalogenation B. E1 dehydrohalogenationC. SN1 dehydrohalogenationD. SN2 dehydrohalogenationE. A mixture of E1 and E2 pathways II) What is responsible for the formation of different products (major and minor).A. The different activated complex involved in the mechanism.B.Bimolecular Nucleophilic substitution reaction C.Bimolecular Elimination reaction D.The presence of sodium ethoxideE.The hybridisation nature of the secondary carbocation III) All the following is true about the reaction in question 1 except?A. The reaction follows Zaistev’s ruleB. Sodium ethoxide is the nucleophile in this reactionC. The more highly substituted alkene is the most stable…Treatment of compound A (C8H17Br) with NaOCH2CH3 affords two constitutional isomers B and C. Ozonolysis of B affords CH2=O and (CH3CH2CH2)2C=O. Ozonolysis of C affords CH3CH2CH2COCH3 and CH3CH2CHO. What is the structure of A?2-bromo-2-methylbutane undergoes hydrolysis reaction with water, H2O toform compound W. Compound X and compound Y are produced when 2-bromo-2-methylbutane undergoes elimination reaction with alcoholic ofsodium hydroxide, NaOH. (ii) What is the type of reaction involved in the formation of compound W? (iii) Identify the major product of the elimination reaction between compound Xand compound Y based on Zaitsev’s rule.
- Which of the following compounds produces an aldehyde when treated with catalytic sulfuric acid in aqueous solution? A) Compound I B) Compound II C) Compound III D) Compound IVIdentify the missing reagent in the structure below.What is the most likely major organic product obtained from the following reaction? A. none B. ethyl butanoate C. butanoyl chloride D. butyl ethanoate