Please explain why the circled answers for 25, 26, and 27 are correct. The theor
ID: 1010587 • Letter: P
Question
Please explain why the circled answers for 25, 26, and 27 are correct. The theory for each one. Thank you
24) By analyzing the starting material and the product, the following reaction is possibly example of what type of mechanism(s)? o4 cI D) E2 (E)More than one ofthe above A)SNI B)Su2C)El 25) What would be the major productes) of the following reaction? Na Acetone A) I ll C)III D) IV E) None of these choices 26) What would be the major product(s) of the following reaction NaCN Bil D)INone of these choices. (E)None ofthese choices. A) I C) III C)111 D) 1 27) The products) for the following reaction would mainly be dictated by which mechanism? -BuOK i-BuoH Ci A) SNI B) S2 C)E B)SN2 C)EI (D) E2 E) None of these choices.Explanation / Answer
Solution.
25) Because it is a Nucleophillic substitution reaction(SN2), the product is formed as 50% invertion and 50% retention.Invertion is more stable than retention due to the sterichindrence.
26) Because 2-iodo-2-pentene reaction with NaCN / DMSO to form 2-methyl2-pentene as a final product.(DMSO act as a methylating reagent)
27) Because substrate is a secondary halide,it undergoes elimination reaction (E2) in the presence of strong base that is t-BuOK.