Q6. Give the mechanism of the following reaction R₂C=CR₂ Alkene H₂O R₂C-CR₂ HO X Vicinal halohydrin HO R₂C CR₂ Epoxide

Use the following reagent table for the reaction of: cyclohexanol + H2 SO4 → cyclohexene Chemical MW (g/mol). Density (g/mL) mmols used Amount used cyclohexanol 100.16 0.9624 1.50 mL Sulfuric Acid 98.08 1.83 1.00 mL cyclohexene 82.14 Based on your answers in the previous two questions, identify what the Limiting Reagent for the reaction is:

[Review Topics] [References] Use the References to access important values if needed for this question. Draw a structural formula for the missing organic reactant in the esterification reaction below. ? + CH3OH è *** • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. CH4 OCH3 + H₂O CH₂CH3 Y

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5. Synthesis: Synthesize the following compound from cyclohexane, any carbon pieces that are three carbons or less (can include other functional groups), and any inorganic reagents.

Subject-- chemistry

Draw the product that would form when 4-methyl-2-pentene reacts with bromine. • 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. / Sn [F ? ChemDoodle

CH3 CH3 Br- Br2 .CH3 CH2Cl2 CH3 H3C H3C Br Electrophilic addition of bromine, Brɔ, to alkenes yields a 1,2-dibromoalkane. The reaction proceeds through a cyclic intermediate known as a bromonium ion. The reaction occurs in an anhydrous solvent such as CH,Cl,. In the second step of the reaction, bromide is the nucleophile and attacks at one of the carbons of the bromonium ion to yield the product. Due to steric clashes, the bromide ion always attacks the carbon from the opposite face of the bromonium ion so that a product with anti stereochemistry is formed. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions CH3 CH3 CH3 CH3 H3C H3C :Br: :Br:

МЕСНANISMS 1,2-epoxy-1-methylcyclopentane undergoes both acid-catalyzed and base-catalyzed opening of the epoxide ring to form two different products. > Using ethanol as the solvent and an appropriate acid, show the steps in the acid catalyzed mechanism, writing structures for all products of the steps. Circle the major product(s). > Using ethanol as the solvent and an appropriate base, show the steps in the base- catalyzed mechanism, writing structures for all products of the steps. Circle the major product(s). 1,2-epoxy-1-methylcyclopentane CH3

takeAssignment/takeCovalent Activity.do?locator=assignment-take [Review Topics] [References] Acyl transfer (nucleophilic substitution at carbonyl) reactions proceed in two stages via a "tetrahedral intermediate." Draw the tetrahedral intermediate as it is first formed in the following reaction. 0 7 H3C • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. + • Do not include counter-ions, e.g., Na+, I, in your answer. . In cases where there is more than one answer, just draw one. CI -8) CH3OH 8) ₁ [F + ? ✩✩ ✰ ✰ C