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Q: What product would you expect to obtain from addition of Cl2 to 1,2-dimethyl-cyclohexene?
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What products would you expect from oxymercuration-demercuration of 1-hexene? Show the mechanism.
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- Draw a structural formula for 4-methyl-l-hexene. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. opy aste CH4 ChemDoodleGive at least two methods for the preparation of 2-methylpropene. What happens if it is treated with: a) H2O/H+; b) HBr/ROOR; c) polymerization. In the case of the reaction with H2O/H+ write the mechanism.Draw a structural formula for 2-methylpropene. You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. CH4 Sn [1 ? ChemDoodle
- C=CH H20, H2SO4 H9SO4 CH3 Alkynes do not react directly with aqueous acid as do alkenes, but will do so in the presence of mercury(II) sulfate as a Lewis acid catalyst. The reaction occurs with Markovnikov regiochemistry, so the OH group adds to the more highly substituted carbon and the H adds to the less highly substituted carbon. The initial product of the reaction is a vinyl alcohol, also called an enol. The enol immediately rearranges to a more stable ketone via tautomerization. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions H-OH HO: Hjö: C=CH c=CH Hö Hg Hg(a) • Consider E/Z stereochemistry of alkenes. • Do not show stereochemistry in other cases. • You do not have to explicitly draw H atoms. Draw a structural formula for the alkene: 2-methyl-2-heptene. MUIL Templates Sn [F ? Ⓡ ChemDoodle (b) Draw a structural formula for the alkene: (E)-1-chloropropene.Organometallic reagents such as sodium acetylide undergo an addition reaction with ketones, giving alcohols: он 1. Na+ -:CCH 2. H30* C-C=CH How might you use this reaction to prepare 2-methyl-1,3-butadiene?
- Please predict the outcome of the addition of HBr to (a) trans-2-pentene, (b) 2-methyl-2-butene, and (c) 4-methylcyclohexene. Also please list how many isomers can be formed in each case? Thank you10) Synthesis: Make the following products from a suitable cyclic alkene starting material. Look at the functional group PATTERN present in the molecule, including stereochemistry. ♡ Br BrIn this chapter, we studied the mechanism of the acid-catalyzed hydration of an alkene. The reverse of this reaction is the acid-catalyzed dehydration of an alcohol. OH H,SO, CH,-CH-CH, CH-CH=CH, + H,O 2-Propanol (Isopropyl alcohol) Propene Propose a mechanism for the acid-catalyzed dehydration of 2-propanol to propene.
- Reaction of 2-methylpropene with CH3OH in the presence of H2SO4 catalyst yieldsmethyl tert-butyl ether, CH3OC(CH3)3, by a mechanism analogous to that of acid- catalyzed alkene hydration. Write the mechanism, using curved arrows for each step.Which products are formed when hydrobromic acid is added to (a) trans-2-hexene, (b) 2-methyl- 2-pentene, and (c) 4-methylcyclohexene, and how many regioisomers can be formed in each case?4-methyl-3-hexanol was prepared by reacting an alkene with either hydroboration-oxidation or oxymercuration-reduction. Draw the structure of the alkene that was used to prepare the alcohol in highest yield. You do not have to consider stereochemistry. • Indicate the method of preparation by drawing either BH; (for hydroboration-oxidation), or Hg (for oxymercuration-reduction), in a separate sketcher. If there is more than one alkene that can be used for a given method, draw all of them. If either hydroboration-oxidation or oxymercuration-reduction can be used, just give the structures for one method. • Separate structures with + signs from the drop-down menu.