Expert Answer. Who are the experts? Experts are tested by Chegg as specialists in their subject area. We review their content and use your feedback to keep the quality high. 100% (56 ratings) Transcribed image text: Which of the following alkyl halides will react fastest with CH_3OH in an SN1 mechanism? a. I b.
we find that (4) gives the most stable carbocation (CH3)3C+, which is a tertiary carbocation, stabilized due to 9 hyperconjugative structures. Hence compound (4) reacts fastest by the SN1 mechanism. Alternatively, (4) has maximum steric hindrance ( crowding of large methyl groups) and hence cannot undergo SN2 mechanism. The tertiary alkyl group in Me3CBr makes it the …
Chemistry. Chemistry questions and answers. Which of the following alkyl halides would react the fastest with H2O in Sn1 reaction? CH3CH2CH2CH2Br, (CH3)2CHCH2Br, CH3CH2CH …
· 1-iodopropane The rate of SN2 reactions mainly depends on 1. Steric hindrance of substrate2. Ability of leaving group capacity.Weaker the Carbon-halogen bond most readily …
Therefore, Answer is tert-butyl chloride.
Thus tert-butyl chloride having the most stable carbocation will undergo the fastest \[{S_N}1\] reaction.
The Reaction Rate Of The SN2 Reaction Is Fastest For Small Alkyl Halides (Methyl > Primary > Secondary >> Tertiary) Finally, note how changes in the substitution pattern of the alkyl halide results in dramatic changes in the rate of the reaction.
Which of the following substrates would have the fastest reaction rate for an SN1 mechanism? Explanation: The SN1 mechanism involves the formation of a carbocation intermediate in the rate-determining step. The most stable carbocation will produce the fastest reaction.
C₆ H₅CH₂Br alkyl halides is best suited for this reaction through SN1 mechanism.
All of the compounds present in option A,B,C will undergo rearrangement in SN1 reaction and SN1 reaction proceeds via a carbocation. Intermediate and rearrangement take place in carbocation to form a more stable carbocation, as the stability of carbocation decreases as 3o>2o>1o.
Alkyl Halide: the more stable the carbocation, the faster it can form. (Recall: both hyperconjugation and the inductive effect allow alkyl groups to stabilize carbocations). The Page 7 more stable carbocation intermediate has a lower activation barrier, so the SN1 reaction occurs faster.
tertiary alkyl halidesWith polar protic solvents and nonbasic nucleophiles, tertiary alkyl halides react faster than secondary alkyl halides by the SN1 mechanism, and primary halides do not react.
Answer. Answer: CH3Br is the most reactive in SN2 mechanism.
An SN1 reaction speeds up with a good leaving group. This is because the leaving group is involved in the rate-determining step. A good leaving group wants to leave so it breaks the C-Leaving Group bond faster.
The hydrolysis of tert-butyl bromide with aqueous NaOH solution is an example of SN1 reaction. The rate of the reaction depends on the concentration of tert butyl bromide but it is independent of the concentration of NaOH. Hence, the rate determining step only involves tert-butyl bromide.
In an SN1 reaction with the OH- ion, C6H5— CH2— Cl will react quicker.