Which of the following anions is the best leaving group in an Sn1 reaction? а. F- b. Но- c. NH2- d. Cl- a O b

5. What is the best choice of reagent to accomplish the following transformation? Xa lom .OH A. HCI B) SOCI₂, pyridine C. Cl₂ D. H₂O*, H₂O

89. What carbonyl compound and what phosphonium ylide are needed to synthesize the following compounds? a. -CH=CHCH2CH2CH3 b. CHCH,CH, c. CH-CH- d. CH

Choose the major product of the following reaction sequence. e OEt Br₂/H₂O major product Br th Br OH OH OEt A. B. C. D. E. Choose the incorrect statement about the following reactions. 2 H CH₂OH CH3OH SN1 SN1 A. Both reactions proceed through a carbocation intermediate. B. The same mixture of products would be anticipated for both reactions. C. The equatorial chloride is more stable than the axial chloride. D. The rates of both reactions must be identical. E. The addition of iodide ion to the above reaction mixtures will not affect the rate of these reactions. OH Br OH

13. Draw the major product(s) of the following reaction. 1. Hg(OAc)2, H₂O 2. NaBH4 ? niwollat

53. What is the product of each of the following reactions? ОН О ОН на одон 2 ма a. b. o НО ОН, HCI

Use Zaitsev's Rule to predict the major product of the following E1 reaction? In töm Na Br XXXX Select one: a. I b. Il C. ||| d. IV IV