Question

Consider the following pair of reactions. Predict the type of elimination mechanism, predict which reaction of the pair will occur at the faster rate, and draw the correct organic product.

Consider the following pair of reactions. Predict the type of elimination mechanism, predict which reaction of the pair will occur at the faster rate, and draw the correct organic product

Answer 1

Cl Ethanol +OH heat E2 mechanism undergoes at faster rate. CI Ethanol +OH heat E2 mechanism undergoes at slow rate Tertiary alkyl halides react faster in E2 mechanism.

Answer 2

The given base hydroxide ion is strong and the substrate is 3° alkyl halide. So, the mechanisnm of this reaction follows E2 path way Cl ethanol : OH heat 3 alkyl chloride E2 faster rate 2,3-dimethylbut-2-ene The given base hydroxide ion is strong and the substrate is 20 alkyl halide. So, the mechanism of this reaction follows E2 path way.

CI ethanol : OH heat E2 slower rate 2-methylbut-2-ene 20 alkyl chloride The reactivity order of E2 reaction is 3° alkyl chloride >2 alkyl chloride >1 Thus, the reaction-1 occurs with fast rate. alkyl chloride