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- cis-1-Bromo-4-tert-butylcyclohexane and trans-1-bromo-4-tert-butylcyclohexane both react with sodium ethoxide in ethanol to form 4-tert-butylcyclohexene. Explain why the cis isomer reacts much more rapidly than the trans isomer.The Diels–Alder reaction between butadiene and dimethyl maleate yields a ring structure, as shown in the product. Complete the structure by drawing any missing bonds and indicating the stereochemistry of the new stereocenters.Which isomer of 1-bromo-3-isopropylcyclohexane reacts faster when refluxed with potassium tert-butoxide, the cis isomer or the trans isomer? Draw the structure of the expected product from the faster-reacting compound.
- A student obtained two products from the reaction of 1,3-cyclohexadiene with Br2 (disregarding stereoisomers). His lab partner was surprised when he obtained only one product from the reaction of 1,3-cyclohexadiene with HBr (disregarding stereoisomers). Account for these results.Draw the alkene that would react with the reagent given to account for the product formed. CH3 HCI CH3 CHCCH, ? + Či CH3 You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one.1,3-Cyclohexadiene and 1,4-cyclohexadiene can be distinguished by reaction with ozone and then treatment with zinc. Draw the structures of the products produced by ozonolysis of the two compounds.
- Bicyclo-2,5-heptadiene can be prepared in two steps from cyclopentadiene and vinyl chloride. Provide a mechanism for each step.Acid-catalyzed dehydration of 3,3-dimethyl-2-butanol gives three alkenes: 2,3-dimethyl-2-butene, 3,3-dimethyl-1-butene, and 2,3-dimethyl-1- butene. Draw the structure of the carbocation intermediate leading to the formation of 2,3-dimethyl-2-butene. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. If more than one structure fits the description, draw them all. Separate structures with + signs from the drop-down menu. C P opy aste ChemDoodle >Acid-catalyzed dehydration of 3,3-dimethyl-2-butanol gives three alkenes: 2,3-dimethyl-2-butene, 3,3-dimethyl- 1-butene, and 2,3-dimethyl-1-butene. Draw the structure of the carbocation intermediate leading to the formation of 2,3-dimethyl-2-butene. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • If more than one structure fits the description, draw them all. • Separate structures with + signs from the drop-down menu. / H₂C CH₂ CH3 CH3 ChemDoodleⓇ On []
- Draw the structural formula of the product of the reaction shown below. + H₂O AAVIL H₂SO4 • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If the reaction produces a racemic mixture, just draw one stereoisomer. Sn [F Ⓡ ChemDoodleIndicate the stereochemistry (cis or trans) of the product obtained between Br2 and cyclohexene in addition to the reaction mechanism. Develop the reaction mechanism and explain the result obtained. + H Br-Br H What would be the product formed after carrying out the previous reaction using as a solvent: A) Ethanol B) Methanol C) H2O D) CC14Two substitution products result from the reaction between 3-chloro-3-methyl-1- butene with sodium acetate (CH3COO – Na +) in acetic acid under SN1. Identify the products.