Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Chapter 5.SE, Problem 55AP
On reaction with hydrogen gas by a platinum catalyst, ribose (Problem 5-54) is converted into ribitol. Is ribitol optically active or inactive? Explain.
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(R)
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Chapter 5 Solutions
Organic Chemistry
Ch. 5.2 - Prob. 1PCh. 5.2 - Prob. 2PCh. 5.2 - Prob. 3PCh. 5.2 - Prob. 4PCh. 5.3 - Is cocaine (Worked Example 5-2) dextrorotatory or...Ch. 5.3 - Prob. 6PCh. 5.5 - Prob. 7PCh. 5.5 - Prob. 8PCh. 5.5 - Prob. 9PCh. 5.5 - Assign R or S configuration to the chirality...
Ch. 5.5 - Draw a tetrahedral representation of...Ch. 5.5 - Prob. 12PCh. 5.6 - One of the following molecules (a)–(d) is...Ch. 5.6 - Prob. 14PCh. 5.6 - Assign R or S configuration to each chirality...Ch. 5.7 - Prob. 16PCh. 5.7 - Which of the following have a meso form? (Recall...Ch. 5.7 - Does the following structure represent a meso...Ch. 5.8 - Prob. 19PCh. 5.8 - Prob. 20PCh. 5.9 - Prob. 21PCh. 5.11 - Prob. 22PCh. 5.11 - Prob. 23PCh. 5.11 - The lactic acid that builds up in tired muscles is...Ch. 5.11 - The aconitase-catalyzed addition of water to...Ch. 5.SE - Which of the following structures are identical?...Ch. 5.SE - Prob. 27VCCh. 5.SE - Prob. 28VCCh. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Prob. 30VCCh. 5.SE - Prob. 31APCh. 5.SE - Which of the following compounds are chiral? Draw...Ch. 5.SE - Prob. 33APCh. 5.SE - Eight alcohols have the formula C5H12O. Draw them....Ch. 5.SE - Draw compounds that fit the following...Ch. 5.SE - Prob. 36APCh. 5.SE - Prob. 37APCh. 5.SE - Prob. 38APCh. 5.SE - What is the stereochemical configuration of the...Ch. 5.SE - Prob. 40APCh. 5.SE - Prob. 41APCh. 5.SE - Prob. 42APCh. 5.SE - Prob. 43APCh. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Prob. 46APCh. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Assign R or S configurations to the chirality...Ch. 5.SE - Assign R or S stereochemistry to the chirality...Ch. 5.SE - Prob. 50APCh. 5.SE - Draw examples of the following: (a) A meso...Ch. 5.SE - Prob. 52APCh. 5.SE - Prob. 53APCh. 5.SE - Prob. 54APCh. 5.SE - On reaction with hydrogen gas by a platinum...Ch. 5.SE - Prob. 56APCh. 5.SE - Prob. 57APCh. 5.SE - One of the steps in fat metabolism is the...Ch. 5.SE - The dehydration of citrate to yield cis-aconitate,...Ch. 5.SE - The first step in the metabolism of glycerol,...Ch. 5.SE - One of the steps in fatty-acid biosynthesis is the...Ch. 5.SE - Prob. 62APCh. 5.SE - Draw tetrahedral representations of the two...Ch. 5.SE - The naturally occurring form of the amino acid...Ch. 5.SE - Prob. 65APCh. 5.SE - Prob. 66APCh. 5.SE - Prob. 67APCh. 5.SE - Allenes are compounds with adjacent carbon-carbon...Ch. 5.SE - Prob. 69APCh. 5.SE - Prob. 70APCh. 5.SE - How many stereoisomers of...Ch. 5.SE - Draw both cis- and trans-1,4-dimethylcyclohexane...Ch. 5.SE - Draw both cis- and trans-1,3-dimethylcyclohexane...Ch. 5.SE - cis-1,2-Dimethylcyclohexane is optically inactive...Ch. 5.SE - Prob. 75APCh. 5.SE - Prob. 76APCh. 5.SE - Prob. 77AP
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- A 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_forwardA graduate student was studying enzymatic reductions of cyclohexanones when she encountered some interesting chemistry. When she used an enzyme and NADPH to reduce the following ketone, she was surprised to find that the product was optically active. She carefully repurified the product so that no enzyme, NADPH, or other contaminants were present. Still, the product was optically active. Is the product capable of showing optical activity? If it is, explain how.arrow_forwardA graduate student was studying enzymatic reductions of cyclohexanones when she encountered some interesting chemistry. When she used an enzyme and NADPH to reduce the following ketone, she was surprised to find that the product was optically active. She carefully repurified the product so that no enzyme, NADPH, or other contaminants were present. Still, the product was optically active. Does the product have any asymmetric carbon atoms or other stereocenters?arrow_forward
- What happens when bromine attacks CH2 = CH – CH2 – C ≡ CHarrow_forward1. Ketones react with sodium acetylide (the sodium salt of acetylene, Na“:C=CH) to give alcohols. For example: OH 2 H;0 a. Is the product chiral? b. Draw both major and minor reaction products, assuming that the reaction takes place preferentially from the Re face of the carbonyl group. Is the product mixture optically active? Explain.arrow_forward3. Use curly arrows to show the mechanism for the following transformation. Show the conformation that the reactant must be in to undergo the elimination reaction. Et Et F Br ······|||| NaOH H₂O Farrow_forward
- Predict the products formed when CH3CH2¬C‚C≠- Na+ reacts with the following compounds. formaldehydearrow_forwardWhat is the major Organic product of the following reaction? (d) O ZEU OH CH₂N₂ CH; (b) (e) NH₂ NH₂ C (0) OCH, CH;arrow_forwardDraw the organic product that is expected to form when the following compound is oxidized under biological conditions. oxidation reduction 0 SH • You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. If no reaction occurs, draw the organic starting material. / BO O-Sn [F ChemDoodle Previous Marrow_forward
- s 2req 2req 2req 2req 2req Visited Complete the equation for the following reaction by drawing a structural formula for the missing organic product. Onomorecom NH3 CH₂ + You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. • Draw cations and anions in separate sketchers. Ⓒ%81 CH₂ H₂O ? Y Jn [1arrow_forwardWhat product is formed when D-Gulose is treated with a. CH3I, Ag2O b. The product in (a), then H3O+ c. The product in (b), then C6H5CH2Cl, Ag2Oarrow_forward?Q1: 1. Which carbene is produced in the following reactions CI CI MezO H-C-Br → Me3OH +Č Br- ? I. CBrl CCIB O CCII O All 0 أخرىarrow_forward
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