Test Paper Version B nt you prepare 2-tert-butylcyclohexanone by the following r

Question

Test Paper Version B nt you prepare 2-tert-butylcyclohexanone by the following reaction? 37 A. Because tert-butyl bromide is too acidic. B. Because tert-butyl bromide is not an electrophile C. Because tert-butyl bromide undergoes an E2 reaction. D. Because tert-butýl bromide is not a stable compound. 38. Which of the following statements regarding enol and enolate is correct? A. Both formations of enol and enolate are catalyzed by bases. B. Both formations of enol and enolate are catalyzed by acids. C. Enolate is a better nucleophile than enol. D. Enolate is a nucleophile while enol is an electrophile. 39. Which of the following chiral compounds uill racemize when treated with a base? D. Both A and C E. All of the above 40. What is the missing reagent in the reaction below? Br Br A. Bra/AcoH B. Br/KOH C. Bra/FeBrs D. HBr

Explanation / Answer

37) option C is correct

Explanation: tert-butyl bromide is a sterically hindered alkyl halide and undergoes elimination reaction and produces alkene as product.

38) option D is corrrect

Explanation: deprotonation of carbonyl compound produces carbanion which is also called enolate so enolate is a nucleophile.

39) option E is correct

Explanation: Carbonyl ocmpounds having alpha hydrogen can racemize when treated with base.

40) option A is correct

Explanation; Reaction of ketone with Br2, AcOH produces alpha halogenation.

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