Which of the following cannot undergo an E2 reaction? only I only II only III I...
o Which of the following cannot undergo an E2 reaction? a) Br gut a Provide the missing reagents b) CH₂ I ² c) CH₂I : BY &
1. Which of the following structures is/are a secondary alkyl halide? (a) I and II (b) II and V (c) I, II and V (d) IV only (e) I, II and III 2. Which of the following is/are aprotic solvent(s)? Choose all correct answers. (a) (b) (c) (d) (e) (f) 3. Which of the following carbocations, if formed, is (are) likely to undergo rearrangement through a hydride shift? (a) I (b) II (c) III (d) I and II (e) II...
Determine the product(s) of the following reaction. Only I Only II Only III Only II and III What is the major organic product obtained from the following sequence of reactions? (R)-2-Methylpentanenitrile (S)-2-Methylpentanenitrile (plusminus), 2-Methylpentanenitrile trans-2-Butene
Which of the following series converge? III. a) III only b) II only c) II and III d) I only e) I and II 1) I, II, and III
QUESTION 46 Which of the following substrates can undergo an E2 step with H 2N base? as the Са. II b.I OcII d. IV e.V QUESTION 55 What is the rate law for the following S N2 reaction? Br: SÖH - Sy2 a. Rate - k[A]2 b.Rate = K[A][B] c. Rate -k[A] d. Rate = k[B]? e. Rate = k[B] QUESTION 59 Which of the following is the repeat unit for the polymer produced in the following reaction? ROOR A....
Question 7 (2 points) Which of the following dienes can undergo the Diels-Alder reaction? II III IV a) 11 Ob) III Oc) Od IV Question 8 (2 points) How would you use 'H NMR spectroscopy to distinguish between the following compounds based on the benzene ring protons? II O O a) Benzene protons for I show up between 6.0 - 7.0 ppm and Il between 7.0 - 8.0 ppm Ob) Benzene protons for I show up between 7.0 - 8.0...
Question 15 Which of the following would undergo epimerization in base? You ☺ II III IV A. I B. II C. III D. IV E. Both III and IV Question 16 What is the correct structure for 3-phenylpropanal? MY II H IV V ООООО CA. II B. C. IV D.V E. III
13. What is (are) the elimination product(s) of the following reaction Br メ A) Only I B) Only II C) Only III D) II and III Which of the following represents the rate law for an E2 reaction? A) Rate k[alkyl halide] B) Rate k[alkyl halide][base] C) Rate k[alkyl halide]2 D) Rate k[base] 14. 15. Which of the following statements about the mechanism of an E2 reaction is true? A) B) C) D) All bonds are broken and formed in...
Question 6 2 pts Which of the following cannot be a diene in the Diels-Alder reaction? ooooo III IV Il & IV O I&IV Only II Only IV Only! Only III II & III All the M.O.s of 1,3-butadiene are shown below. Which picture represents the Photochemically excited HOMO? 888 IV O IV O II
(a) Answer TWO of (i), (ii) or (iii) [2 x 6 marks] (i) The two isomers shown below undergo E2 elimination at very different rates when reacted with KO'Bu. Me • Me Me Br Br (A) Draw structural representations of both isomers. (B) Indicate which isomer will react faster. (C) Give the structure of the product and provide a reaction mechanism for its formation.