Pearson eText Organic Chemistry -- Instant Access (Pearson+)
9th Edition
ISBN: 9780135213728
Author: Leroy Wade, Jan Simek
Publisher: PEARSON+
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Chapter 23.11, Problem 23.33P
The Wohl degradation, an alternative to the Ruff degradation, is nearly the reverse of the Kiliani—Fischer synthesis. The aldose carbonyl group is converted to the oxime, which is dehydrated by acetic anhydride to the nitrile (a cyanohydrin). Cyanohydrin formation is reversible, and a basic hydrolysis allows the cyanohydrin to lose HCN. Using the following sequence of reagents, give equations for the individual reactions in the Wohl degradation of D-arabinose to D-erythrose. Mechanisms are not required.
- a. hydroxylamine hydrochloride
- b. acetic anhydride
- c. −OH, H2O
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Chapter 23 Solutions
Pearson eText Organic Chemistry -- Instant Access (Pearson+)
Ch. 23.2 - Prob. 23.1PCh. 23.3A - Prob. 23.2PCh. 23.3A - Prob. 23.3PCh. 23.3B - Draw and name the enantiomers of the sugars shown...Ch. 23.3B - Prob. 23.5PCh. 23.3C - Prob. 23.6PCh. 23.4 - Draw the Haworth projection for the cyclic...Ch. 23.4 - Prob. 23.8PCh. 23.4 - Prob. 23.9PCh. 23.4 - Prob. 23.10P
Ch. 23.4 - Prob. 23.11PCh. 23.5 - Prob. 23.12PCh. 23.5 - Prob. 23.13PCh. 23.6 - Prob. 23.14PCh. 23.6 - Prob. 23.15PCh. 23.7 - Prob. 23.16PCh. 23.7 - Prob. 23.17PCh. 23.7 - Two sugars, A and B, are known to be glucose and...Ch. 23.7 - Prob. 23.19PCh. 23.8 - Prob. 23.20PCh. 23.8 - Prob. 23.21PCh. 23.8 - Prob. 23.22PCh. 23.8 - Prob. 23.23PCh. 23.8 - Prob. 23.24PCh. 23.9 - a. Show the product that results when fructose is...Ch. 23.9 - Prob. 23.26PCh. 23.9 - Prob. 23.27PCh. 23.9 - Prob. 23.28PCh. 23.10 - Prob. 23.29PCh. 23.10 - Prob. 23.30PCh. 23.10 - Prob. 23.31PCh. 23.11 - Prob. 23.32PCh. 23.11 - The Wohl degradation, an alternative to the Ruff...Ch. 23.11 - Prob. 23.34PCh. 23.11 - Prob. 23.35PCh. 23.12A - Prob. 23.36PCh. 23.12A - Give an equation to show the reduction of Tollens...Ch. 23.12A - Prob. 23.38PCh. 23.12B - Prob. 23.39PCh. 23.12C - Prob. 23.40PCh. 23.12C - Prob. 23.41PCh. 23.13A - Prob. 23.42PCh. 23.15 - Cytosine, uracil, and guanine have tautomeric...Ch. 23.15 - a. An aliphatic aminoglycoside is relatively...Ch. 23.16C - Prob. 23.45PCh. 23 - Prob. 23.46SPCh. 23 - Prob. 23.47SPCh. 23 - Prob. 23.48SPCh. 23 - Prob. 23.49SPCh. 23 - Prob. 23.50SPCh. 23 - Prob. 23.51SPCh. 23 - Prob. 23.52SPCh. 23 - Prob. 23.53SPCh. 23 - Prob. 23.54SPCh. 23 - Prob. 23.55SPCh. 23 - Prob. 23.56SPCh. 23 - Prob. 23.57SPCh. 23 - Prob. 23.58SPCh. 23 - Prob. 23.59SPCh. 23 - Prob. 23.60SPCh. 23 - Prob. 23.61SPCh. 23 - Prob. 23.62SPCh. 23 - Prob. 23.63SPCh. 23 - Draw the structure of a four-residue segment of...Ch. 23 - Retroviruses like HIV, the pathogen responsible...Ch. 23 - Prob. 23.66SPCh. 23 - Prob. 23.67SP
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