13 Draw a step-by-step mechanism for the transformation shown below (no additional reagents are needed), showing all electron flow with arrows. Br H20
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- Provide the mechanism and products for the acid-catalyzed epoxide opening reactions below, including appropriate stereochemistry.Please give a detailed stepwise mechanism for the following reactions of Q.1 and Q.2. All arrows, charges, intermediates, and resonance structures must be shown.Propose a mechanism for each reaction, showing explicitly how the observed mixtures of products are formed. cyclopenta-1,3-diene + Br2 S 3,4-dibromocyclopent-1-ene + 3,5-dibromocyclopent-1-ene
- Provide the major product(s) for each reaction below and you may assume there is anexcess of each reagent for each reactionDraw the major product(s) of the reaction of 1-methylcyclohexene with the following reagents, disregarding stereoisomers: 1. NBS/∆/peroxide 2 . Br2/CH2Cl2 3. HBr 4. HBr/peroxideb. For each reaction, show which stereoisomers are obtained.Treatment of cis-2-bromocyclohexanol with NaOH yields cyclohexanone instead of an epoxide. Draw curved arrows to show the movement of electrons in this step of the reaction mechanism.
- In a strongly acidic solution, cyclohexa-1,4-diene tautomerizes to cyclohexa-1,3-diene.Propose a mechanism for this rearrangement, and explain why it is energetically favorable.PFill in the missing reagents and “key intermediate” in each transformation below:Propose a mechanism for each reaction, showing explicitly how the observed mixtures of products are formed.(a) 3@methylbut@2@en@1@ol + HBr S 1@bromo@3@methylbut@2@ene + 3@bromo@3@methylbut@1@ene
- These reagents can produce ketones with alkynes A. BH3, THF, H2O2 B. KMnO4 C. O3 D. H2SO4, H2O, HgSO4Predict the major products of the following reactions, including stereochemistry where appropriate. (a) cyclopentylmethanol + Na2Cr2O7/H2SO4 (b) cyclopentanol + HCl/ZnCl2#16d. Provide the missing reactants, reagents, or products for the following reaction sequences below.