(a)
Interpretation:
Major elimination product should be given, when given
Concept Introduction:
An E1 reaction is a two-step reaction in which the alkyl halide dissociates forming a carbocation intermediate. Then a base removes a proton from adjacent carbon to a positively charged carbon.
Major product is more stable
An E2 reaction is a concerted, one-step reaction in which the proton is the more stable alkene, unless the reactants are sterically hindered or the leaving group is poor.
(b)
Interpretation:
Major elimination product should be given, when given alkyl halide reacts with strong base and weak base.
Concept Introduction:
An E1 reaction is a two-step reaction in which the alkyl halide dissociates forming a carbocation intermediate. Then a base removes a proton from adjacent carbon to a positively charged carbon.
Major product is more stable alkene.
An E2 reaction is a concerted, one-step reaction in which the proton is the more stable alkene, unless the reactants are sterically hindered or the leaving group is poor.
Want to see the full answer?
Check out a sample textbook solutionChapter 9 Solutions
Organic Chemistry (8th Edition)
- Search a reaction scheme for each reaction and draw the step-by-step mechanism using curved arrows for the following reactions. Explain how the IR spectrum (IR peaks of the functional groups) of the product would differ from that of the reactant in each reaction Grignard reaction Reduction of aldehydes or ketones Acetal or Ketal formation Wittig reactionarrow_forwardDraw the major product for the following substitution reaction and include stereochemistry when appropriatearrow_forwardDraw the products obtained in each of the following reactions, assuming that only one equivalent of each reagent is used in each case:arrow_forward
- Choose the most correct set of reagents for the following reaction.arrow_forwardWhy alkyl halides are considered to be very reactive compounds towards nucleophile? they have a nucleophilic carbon & active leaving group they have an electrophilic carbon & non-active leaving group they have an electrophilic carbon & an active leaving group they have anarrow_forwardRank the compounds in each group in order of increasing reactivity in nucleophilic acyl substitution. C6H5CO2CH3, C6H5COCl, C6H5CONH2arrow_forward
- Draw the product(s) for the following reaction NaCN HCNarrow_forwardWhich compound below could not be made starting from a carbonyl compound under basic conditions (a) HO OH HO OH OH HO OH OHarrow_forwardDraw the structures of the initially formed enol tautomers in the reactions of propyne and dicyclohexylethyne with dicyclohexylborane followed by NaOHNaOH and H2O2H2O2arrow_forward