14. The alkenes shown below can all react with HCI to product chloroalkanes. When thisreaction takes place, which ONE of the alkenes produces a product that is a 50:50mixture of two enantiomers? (In other words, which one produces a product that has achiral carbon.) Assume that only Markovnikov addition of HCI takes place.حدA BCDE

Structure D:Reaction: The addition of hydrochloric acid (HCl) in the Markovnikov style affected the…

Answered: 14. The alkenes shown below can all…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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The decomposition of various substituted benzyl azoxyarenesulfonates in trifluoroethanol was studied. The overall reaction is shown below F3C OH CF3 HO,S + N20 The decomposition of various substituted benzyl azoxyarenesulfonates in trifluoroethanol was studied. The overall reaction is shown below F,C OH HO,S + N,0 Y kobs (S ') 3-CI CH3 3.1 x 10-7 4-CI CH3 2.3 х 10-6 3-CH3 4-CH3 4-OCH3 CH3 CHs 4.7х 10-6 CH3 7.6х 10-6 CH3 6.0 x 10-5 1.7 x 10-3 4-CH OCH3 4.24 x 10-5 4-CH3 4-CH3 4-CH3 CH3 Br 6.0 x 10-5 1.91 x 10-4 CN 4.65 x 10-4 a. Using the data provided, prepare Hammett plots to quantify the effects of the substituents X and Y on the reaction's rate. Attach them to your problem set. b. Based on your Hammett analysis, propose a complete, curved-arrow mechanism for this reaction. Use a sentence or two to explain how your Hammett analyses support your proposed mechanism.
Modify the Fischer projection of the following aldose to show the compound that is formed when the aldose is treated with H2 in the presence of a Pd catalyst. CHO H -OH HO H H .OH CH₂OH X :ロ G
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What is the correct designation of this alkene? cis o trans
5
1-39. Classify each of the molecules in problem 1-37 as D-enantiomer or an L-enantiomer
2-butanol can be formed as the only product of the Markovnikov addition of H2O to two different alkenes. In contrast, 2-nonanol can be formed as the only product of the Markovnikov addition of H2O to just one alkene. To examine the difference, draw the alkene starting materials of each alcohol. + Draw the bond-line (skeletal) structures of the two alkene starting materials that can be used to synthesize 2-butanol via Markovnikov hydration. Part 1 of 2 Click and drag to start drawing a structure. Х : ☐
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2-butanol can be formed as the only product of the Markovnikov addition of H2O to two different alkenes. In contrast, 2-nonanol can be formed as the only product of the Markovnikov addition of H2O to just one alkene. To examine the difference, draw the alkene starting materials of each alcohol. Part 1 of 2 Draw the bond-line (skeletal) structures of the two alkene starting materials that can be used to synthesize 2-butanol via Markovnikov hydration. Click and drag to start drawing a structure. 0* Part 2 of 2 Draw the bond-line (skeletal) structure of the alkene starting material that can be used to synthesize 2-nonanol selectively via Markovnikov hydration. Click and drag to start drawing a structure.
In observing a Haworth or cyclohexane-chair representation of alpha-d-glucopyranose, the anomeric carbon can de best identified by: a) the carbon atom which is bonded to the most H atoms b) the carbon atom which is bonded to the least H atoms c) The carbon atom which has its OH group pointing down d) The carbon atom which is bonded to two oxygen atoms Cellulose differs from amylose in that: a) cellulose has 1-6 branches while amylose does not b) amylose has 1-6 branches while cellulose does not c) amylose has alpha glycosidic bonds while cellulose has beta glycosidic bonds d) cellulose contains sulfate while amylose does not. The glycosaminoglycan (mucopolysaccharide) which is not normally associated with joint tissue is: a) heparin b) keratan sulfate c) chondroitin sulfate d) hyaluronic acid In glycoproteins, which amino acid does not bond sugar molecules? a) Asn b) Ser c) Thr d) Gly Which feature do all lipid molecules share in common? a) fatty acid molecules…
Dehalogenase enzymes catalyze the clevage of C-X bonds. One such dehalogenase catalyzes the following reaction. An active site aspartate is thought to carry out the initial nucleophilic attack that expels the chloride. Select the most likely intermediate in the reaction. (Note the stereochemistry. Refer to P11.19 in the textbook if needed.) O O A C D OE -CH₂ H H₂C™ CO₂ H B CO₂ CI N H₂O Cr CO₂ H CO₂ нотум CH3 D CO₂ five N E CH₂
Will the synthesis of 9,10-dihydroanthracene-9,10-α,β-succinic anhydride via Diels-Alder reaction occur faster under photochemical conditions? Explain.

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