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- Which of the following carbocations would be expected to rearrange? None of these would be expected to rearrange. „CH3 CH;CCH,CH3 ČH3 .CH3 „CH315. Which of the following carbocations is the most stable? a) ethyl carbocation, CH3CH2+ b) rpropyl carbocation, CH3CH2CH2* c) Isopropyl carbocation, (CH3)2CH* d) t-butyl carbocation, (CH3)3C++ 9. Of the isomeric C5H₁1* carbocations, which one is the most stable? Carey 5 161
- Which of the following carbocations is the most stable? A B D A B MeO C O₂N DWhich carbocation would be least stable? II + + III IV VIn light of your answer to Problem 11-74, explain why one of the following isomers undergoes E2 reaction approximately 100 times as fast as the other. Which isomer is more reactive, and why?
- 4. Rank the following carbocations according to stability (1: most stable, 5: least stable.) e A OCH3 +10. Draw ALL possible stereoisomers possible for 8i. Give the configurations of each stereocenter in 8i. (NOTE: Ph is the abbreviation for an aromatic ring and is assigned a priority of 4 in the structure for 8i, below) H₂C U CH3 MAIII OH Product 8i'Br OH 'Br "Br Br HO.,
- 4. Rank the following carbocations according to stability (1: most stable, 5: least stable.). ht t tá OCH 3 +[References] The two alkenes below react with HI at different rates. CH3 CH3CH=CHCH3 and CH;ċ=CHCH3 Draw the structural formula of the MAJOR product formed by the alkene having the HIGHER reaction rate. You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. In cases where there is more than one answer, just draw one. C P opy aste Previous Next ChemDoodle®2. Show the mechanism with arrow formalism to show the formation of the most stable product. Which of the following terms apply to the mechanism(s) i) Regioselectivity (ii)stereoselectivity (iii)stereospecificity. Explain H+ (aq) from sulfuric acid NaCN most stable product
