The reaction depicted below most likely proceeded by a(n) Adn2 Adc3 () AdE2 E2 Q

Question

The reaction depicted below most likely proceeded by a(n) Adn2 Adc3 () AdE2 E2 Question 63 1 pts Imagine that a scientist mixes 2-bromobutane and sodium methoxide in methanol. What type of reaction is likely to predominatc? Remember to consider the type of alkkyl halide that is involved, and remember also to consider whether the anion will act predominantly as a base oras a nucleophile or as both a base and a nucleophile. If the latter, consider the figure below to guide your decision Finally, remember to consider the pKa rule, as it applies to each of the various reaction archetypes. SN2 E2 30 2° Type of Alkyl Halide almost exclusively E2b 95%} mostly E2 (major) with some SN2 (minor) mostly S,,2 (major) with some E2 (minor) @ almost eclusively SNI t> 95%) mostly E1 (major) with some 1 (minor) almost eclusively Sn2b 95%) almost exclusively E1cB {> 9556) mostly SNI (major) with some E1 (minor) almost exclusively E1b 95%

Explanation / Answer

1. Option E, AdE2 ,

Its an example for electrophilic addition reaction of alkenes.

63. Option B,

Since it involves reaction of 2° R-X with base and forms alkene by E2 elimination as sodium ethoxide acts as a base.

And also if it acts as Nucleophile some minor amount of Substitution product also formed.

It is evidenced by graph that for 2° R-X .

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