Select the correct arrow-pushing mechanism for the formation of the more stable carbocation intermediate in he addition of a hydrogen halide to the following alkene. H-Br: O H-Br: + Br H-Br: H + :Br H-Br: Br
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- Which of the structures shown depicts the most stable carbocation intermediate formed in a hydrohalogenation reaction? I II III IV VPlease give the main substitution product for each of the following reactions, and indicate the dominant mechanism: (a) 1-bromopropane + NaOCH3 → (b) 3-bromo-3-methylpentane + NaOC2H5 →Explain the reaction mechanism of the reaction below? (Identify the type of reaction, the species (Nucleophile an electrophile) involve in the reaction after bond cleavage and the IUPAC name of the major product.
- Below is the equation for a nucleophilic substitution reaction and some experimental data. CH3CH2Br + CH3COO- ⇌ CH3CH2CO2CH3 + Br- ΔH=-75 kJ/mol Rate = k [CH3CH2Br][CH3COO-] Which reaction energy profile would be the best representative of the data provided?what intermediate is formed in the reaction below?Predict the product and provide a suitable mechanism. The reaction proceeds through a rearrangement. What is the name of the rearrangement? Based on the rearrangement, write the product of the second reaction.
- Match the conditions most favorable for the substitution reaction type (SN1 or SN2) Strong nucleophile Tertiary carbocation intermediate Protic solvent Primary carbocation intermediateThe following flow chart connects three of the reactions we have discussed that involve carbocation intermediates. Each arrow may represent more than one elementary step in a mechanism.Arrows 1 and 2 summarize the conversion of alcohols to alkyl halides, 3 and 4 the dehydrohalogenation of an alkyl halide to an alkene by the E1 mechanism, and 1 and 4 the formation of an alkene by dehydration of an alcohol. The reaction indicated by arrow 5 constitutes a major focus of the next chapter. There we will explore reactions that give overall addition to the double bond by way of carbocation intermediates. One such process converts alkenes to alkyl halides (5 + 2), another converts alkenes to alcohols (5 + 6).What term best describes the relationship between an alkene and a carbocation? A. Isomers B. Resonance contributors C. Alkene is conjugate acid of carbocation D. Alkene is conjugate base of carbocation- For the dehydration shown, use curved arrows to show the formation of the carbocation intermediate in the presence of sulfuric acid H2SO4H2SO4, then draw the structures of the minor and major products of the elimination. Picture: Cyclohexane (no double or triple bonds) with a methyl group and an alcohol group (HO 4e- on O) on C1 (bottom) reacting with H2SO4 -> "Major and Minor Products" -The H2SO4H2SO4 is abbreviated as H+H+ in the drawing module. Do not delete any pre‑drawn bonds, charges, or lone pairs. If you accidentally make a mistake, remove the last change by using the undo button on the lower left or revert the drawing palette to the original state by selecting the More menu, then select Reset Drawing. Step 1: Use curved arrows to complete the protonation mechanism of the alcohol. Step 2: Use a curved arrow to show the formation of the carbocation intermediate for the elimination. (Picture 1) -Step 3: This tertiary carbocation intermediate readily undergoes…
