Which of these alkyl chlorides undergoes dehydrohalogenation in the presence of a strong base to give pent-2-ene (shown below) as the only alkene product? O l-chloro-2-methylbutane O 2-chloropentane O 3-chloropentane O l-chloropentane O 1-chloro-3-methylbutane
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- 2-Methoxy-2-methylpropane on heating with HBr gives : A 2-Methylpropan-2-ol and Bromomethane Methanol and 2-Bromo-2-methylpropane 2-Methylpropan-1-ol and bromomethane D Methoxymethane and Propylbromide2-Methoxy-2-methylpropane on heating with HBr gives : A 2-Methylpropan-2-ol and Bromomethane Methanol and 2-Bromo-2-methylpropane (C) 2-Methylpropan-1-ol and bromomethane D Methoxymethane and PropylbromideGive the SN2 product(s) for the reaction of (R)-2-bromopentane with an excess of sodium methoxide. (R)-2-methoxypentane (S)-2-methoxypentane (S)-2-ethoxypentane (R)-2-ethoxypentane (R)-2-pentanol O(S)-2-pentanol
- The electrophilic addition of HBr to 3-cyclohexylbut-1-ene gives a mixture of two constitutional isomers. These two isomers can also be produced from 3-cylcohexybut-2-ene, but one of which requires different reaction conditions; the electrophilic addition of HBr to 3-cylcohexybut-2-ene produces one of these isomers while the electrophilic addition of HBr to 3-cylcohexybut-2-ene, in the presence of peroxides, produces the other one. Draw the structure for the isomer product that can result from the reactants 3-cyclohexylbut-1-ene and 3-cylcohexybut-2-ene using different reaction conditions. Part 1 of 2 Click and drag to start drawing a structure. C 8 DY 000 8: >Compounds X and Y are both C7H15Cl products formed in the radical chlorination of 2,4-dimethylpentane. Base-promoted E2 elimination of X and Y gives, in each case, a single C7H₁4 alkene. Both X and Y undergo an SN2 reaction with sodium iodide in acetone solution to give C7H15l products; in this reaction Y reacts faster than X. What is the structure of X? • Do not use stereobonds in your answer. • In cases where there is more than one possible structure for each molecule, just give one for each. . Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate structures with + signs from the drop-down menu. наDehydrohalogenation of 1-chloro-1-methylcyclopropane affords two alkenes (A and B) as products. Explain why A is the major product despite the fact that it contains the less substituted double bond.
- A chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2 CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under the same conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C. Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structures of A, B, and C; give equations for their formation; and explain the stereospecificity of these reactions.Compounds X and Y are both C,H15CI products formed in the radical chlorination of 2,4-dimethylpentane. Base-promoted E2 elimination of X and Y gives, in each case, a single C-H14 alkene. Both X and Y undergo an SN2 reaction with sodium iodide in acetone solution to give C-H151 products; in this reaction Y reacts faster than X. What is the structure of X? • Do not use stereobonds in your answer. • In cases where there is more than one possible structure for each molecule, just give one for each. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate structures with + signs from the drop-down menu. In (F ChemDoodle-If (S)-2-bromo-3-methylbutane reacts with sodium methoxide (NaOCH) in a mixed solvent made from equal volume of methanol and hexane. The percent of the major product (enantiomer) if the reaction went to completion will be
- Which stereoisomer of 3-hexene forms (3S,4S)-4-bromo-3-hexanol and (3R,4R)-4-bromo-3-hexanol when it reacts with Br2 and H2O?A chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under thesame conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C.Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structuresof A, B, and C; give equations for their formation; and explain the stereospecificity of these reactionsWrite a stepwise mechanism for each of the following reactions. Explainwhy a more stable alkyne (but-2-yne) is isomerized to a less stablealkyne (but-1-yne), but under similar conditions, 2,5-dimethylhex-3-yneforms 2,5-dimethylhexa-2,3-diene.