Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 19.SE, Problem 52MP
Interpretation Introduction
Interpretation:
A mechanism for the isomerization of α- glucose when dissolved in water into β-glucose is to be proposed.
Concept introduction:
Free rotation is possible in C-O single bonds. The glucopyranose ring in α- glucose is first cleaved followed by the rotation of C-O bond and the subsequent ring closure leads to the formation of β-glucose.
To propose:
A mechanism for the isomerization of α- glucose when dissolved in water into β-glucose.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Determining if a Base Is Strong Enough to Deprotonate an Acid Which of the following bases is strong enough to deprotonate N,Ndimethylacetamide [CH3CON(CH3)2, pKa = 30], so that equilibrium favors the products:(a)NaNH2; (b) NaOH?
Look up the structure of lisdexamfetamine (Vyvanse), a drug used in the treatment of attention deficit hyperactivity disorder (ADHD). Redraw it and identify all the functional groups present. What is known about itstherapeutic properties?
Draw a mechanism for the conversion of glucose from its aldehyde form to its hemiacetal form and then to its methyl glycoside (acetal) form under acidic conditions. Show all bond breaking and bond forming steps; show all intermediates.
Chapter 19 Solutions
Organic Chemistry
Ch. 19.1 - Prob. 1PCh. 19.1 - Draw structures corresponding to the following...Ch. 19.2 - Prob. 3PCh. 19.2 - How would you carry out the following reactions?...Ch. 19.4 - Treatment of an aldehyde or ketone with cyanide...Ch. 19.4 - p-Nitrobenzaldehyde is more reactive toward...Ch. 19.5 - Prob. 7PCh. 19.5 - The oxygen in water is primarily (99.8) 16O, but...Ch. 19.6 - Prob. 9PCh. 19.8 - Show the products you would obtain by...
Ch. 19.8 - Prob. 11PCh. 19.8 - Prob. 12PCh. 19.9 - Prob. 13PCh. 19.10 - Prob. 14PCh. 19.10 - Prob. 15PCh. 19.11 - What carbonyl compound and what phosphorus ylide...Ch. 19.11 - -Carotene, a yellow food-coloring agent and...Ch. 19.12 - Prob. 18PCh. 19.12 - Prob. 19PCh. 19.13 - Prob. 20PCh. 19.13 - Treatment of 2-cyclohexenone with HCN/KCN yields a...Ch. 19.13 - How might conjugate addition reactions of lithium...Ch. 19.14 - How might you use IR spectroscopy to determine...Ch. 19.14 - Prob. 24PCh. 19.14 - Prob. 25PCh. 19.14 - Prob. 26PCh. 19.SE - Each of the following substances can be prepared...Ch. 19.SE - Prob. 28VCCh. 19.SE - Prob. 29VCCh. 19.SE - Prob. 30MPCh. 19.SE - Prob. 31MPCh. 19.SE - Prob. 32MPCh. 19.SE - Prob. 33MPCh. 19.SE - Prob. 34MPCh. 19.SE - Prob. 35MPCh. 19.SE - It is not uncommon for organic chemists to prepare...Ch. 19.SE - Prob. 37MPCh. 19.SE - Prob. 38MPCh. 19.SE - Prob. 39MPCh. 19.SE - Prob. 40MPCh. 19.SE - Aldehydes and ketones react with thiols to yield...Ch. 19.SE - Prob. 42MPCh. 19.SE - When cyclohexanone is heated in the presence of a...Ch. 19.SE - Prob. 44MPCh. 19.SE - The Meerwein-Ponndorf-Verley reaction involves...Ch. 19.SE - Propose a mechanism to account for the formation...Ch. 19.SE - Prob. 47MPCh. 19.SE - Prob. 48MPCh. 19.SE - Treatment of an , -unsaturated ketone with basic...Ch. 19.SE - Prob. 50MPCh. 19.SE - Prob. 51MPCh. 19.SE - Prob. 52MPCh. 19.SE - Prob. 53MPCh. 19.SE - Prob. 54APCh. 19.SE - Draw and name the seven aldehydes and ketones with...Ch. 19.SE - Give IUPAC names for the following compounds:Ch. 19.SE - Draw structures of compounds that fit the...Ch. 19.SE - Predict the products of the reaction of (1)...Ch. 19.SE - Show how you might use a Wittig reaction to...Ch. 19.SE - How would you use a Grignard reaction on an...Ch. 19.SE - Prob. 61APCh. 19.SE - Prob. 62APCh. 19.SE - How would you synthesize the following substances...Ch. 19.SE - Carvone is the major constituent of spearmint oil....Ch. 19.SE - How would you synthesize the following compounds...Ch. 19.SE - At what position would you expect to observe IR...Ch. 19.SE - Acidcatalyzed dehydration of...Ch. 19.SE - Choose the structure that best fits the IR...Ch. 19.SE - Propose structures for molecules that meet the...Ch. 19.SE - Prob. 70APCh. 19.SE - Prob. 71APCh. 19.SE - When 4hydroxybutanal is treated with methanol in...Ch. 19.SE - Prob. 73APCh. 19.SE - Prob. 74APCh. 19.SE - Prob. 75APCh. 19.SE - Prob. 76APCh. 19.SE - Prob. 77APCh. 19.SE - Tamoxifen is a drug used in the treatment of...Ch. 19.SE - Compound A, MW 86, shows an IR absorption at 1730...Ch. 19.SE - Compound B is isomeric with A (Problem 19-79) and...Ch. 19.SE - The 1HNMR spectrum shown is that of a compound...Ch. 19.SE - Prob. 82APCh. 19.SE - Propose structures for ketones or aldehydes that...Ch. 19.SE - Prob. 84APCh. 19.SE - Prob. 85APCh. 19.SE - The proton and carbon NMR spectra for each of...Ch. 19.SE - The proton NMR spectrum for a compound with...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Nonconjugated , -unsaturated ketones, such as 3-cyclohexenone, are in an acid-catalyzed equilibrium with their conjugated , -unsaturated isomers. Propose a mechanism for this isomerization.arrow_forwardOne of the later steps in glucose biosynthesis is the isomerization of fructose 6-phosphate to glucose 6-phosphate. Propose a mechanism, using acid or base catalysis as needed.arrow_forwardGive the major organic product that is formed when the primary hydroxyl group of the following monosaccharide undergo nucleophilic substitution reaction with acetic anhydridearrow_forward
- 1. Trehalose is a disaccharide that can be obtained from fungi, sea urchins and insects. Acid hydrolysis of trehalose yields only D-glucose. Trehalose is hydrolysed by α-glucosidase and not by β-glucosidase enzymes. Methylation of trehalose followed by hydrolysis yields two molar equivalents of 2,3,4,6-tetra-O-methyl-D-glucopyranose.From the following experimental data, deduce the structure of trehalose.What will be the effect of trehalose on Fehling’s solution? 2.Suggest a test you will use to show that a given food substance contains proteinarrow_forwardA chemist synthesized compound X as a racemic mixture. When the ketone group in X was enzymatically reduced to the corresponding alcohol, a 100% yield was obtained of the product shown below. Choose the statement that best describes this result. ОН enzyme C;H1 `OCH,CH; pH 4.0 C3H1 `OCH,CH3 ОН ÕH X (racemic) (100% yield) One enantiomer of compound X reacts quickly with the enzyme. The other enantiomer of compound X is unreactive, but rapidly equilibrates with the reactive enantiomer under the reaction conditions. Since compound X was racemic, it makes sense that only a single product was obtained. O The product is a meso compound, so either enantiomer of compound X gives the same product. One enantiomer of compound X reacts quickly with the enzyme, while the other enantiomer of compound X remains unchanged.arrow_forwardSynthesize the o-form of amino benzoic acid from benzene.arrow_forward
- Draw the product formed when CH3CH2C=CH is treated with each of the following sets of reagents: (a) H2O, H2SO4, HgSO4; and (b) R2BH, followed by H2O2, HO−.arrow_forwardDraw the two aldohexoses and one ketohexose that can be derived from the enol shownbelowarrow_forwardThe rate constant for the uncatalyzed reaction of two molecules of glycine ethyl ester to form glycylglycine ethyl ester is 0.6 M-1s-1. In the presence of Co2+, the rate constant is 1.5 x 106 M-1s-1. What rate enhancement does the catalyst provide?arrow_forward
- Which of the following bases is strong enough to deprotonate N,Ndimethylacetamide [CH3CON(CH3)2, pKa = 30], so that equilibrium favors the products: (a) NaNH2; (b) NaOH?arrow_forwardA(n) A(n) H₂N- H | O || H₂N -CICIO _ HO ||| H Glycine OH OH OH T CH₂-C-CH₂ H Glycerol H O H H CH₂ Glycylalanine C-N-C + H₂N- C-O HO T || CICIO CH₂ Alanine reaction converts glycylalanine to glycine and alanine. This reaction requires OH O OH I I CH₂-C-CH₂ Dihydroxyacetone reaction converts glycerol to dihydroxyacetone. This reaction requires and also producesarrow_forwardAcid-catalyzed dehydration of 3-methyl-2-butanol gives three alkenes: 2-methyl-2- butene, 3-methyl-1-butene, and 2-methyl-1-butene. Propose a mechanism to account for the formation of each productarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning
Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:Cengage Learning
Introduction to General, Organic and Biochemistry
Chemistry
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Cengage Learning
Enzymes - Effect of cofactors on enzyme; Author: Tutorials Point (India) Ltd;https://www.youtube.com/watch?v=AkAbIwxyUs4;License: Standard YouTube License, CC-BY
Enzyme Catalysis Part-I; Author: NPTEL-NOC IITM;https://www.youtube.com/watch?v=aZE740JWZuQ;License: Standard Youtube License