Organic Chemistry
4th Edition
ISBN: 9780077479824
Author: SMITH, Janice Gorzynski/
Publisher: McGraw-Hill College
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Chapter 9, Problem 9.56P
Interpretation Introduction
Interpretation: An explanation for the given observation that when
Concept introduction: Hydrogen bromide is useful to convert all alcohols
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When (ft)-6-bromo-2,6-dimethylnonane is dissolved in CH3OH, nucleophilic substitution yields an optically inactive solution. When the isomeric halide (fl)-2-bromo-2,5- dimethylnonane is dissolved in CH3OH under the same conditions, nucleophilic substitution forms an optically active solution. Draw the products formed in each reaction, and explain why the difference in optical activity is observed.
When (R)-6-bromo-2,6-dimethylnonane is dissolved in CH3OH, nucleophilic substitution yields an optically inactive solution. When the isomeric halide (R)-2-bromo-2,5-dimethylnonane is dissolved in CH3OH under the same conditions, nucleophilic substitution forms an optically active solution. Draw the products formed in each reaction, and explain why the difference in optical activity is observed.
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Chapter 9 Solutions
Organic Chemistry
Ch. 9 - Draw all constitutional isomers having molecular...Ch. 9 - Prob. 9.2PCh. 9 - Give the IUPAC name for each compound.Ch. 9 - Problem 9.3 Give the structure corresponding to...Ch. 9 - Prob. 9.5PCh. 9 - Name CH33COCH3, a gasoline additive commonly...Ch. 9 - Name each epoxide.
a. (two ways) b. c. (two...Ch. 9 - Problem 9.6 Rank the following compounds in order...Ch. 9 - Which mechanism is favored by the use of crown...Ch. 9 - Draw the organic product of each reaction.
Ch. 9 - Prob. 9.11PCh. 9 - Prob. 9.12PCh. 9 - Prob. 9.13PCh. 9 - Prob. 9.14PCh. 9 - Problem 9.13 Draw the structure of each...Ch. 9 - What other alkene is also formed along with Y in...Ch. 9 - Prob. 9.17PCh. 9 - Explain how the reaction of CH32CHCHCl CH3 with...Ch. 9 - Prob. 9.19PCh. 9 - Draw the products of each reaction, indicating the...Ch. 9 - Problem 9.19 What is the major product formed...Ch. 9 - Prob. 9.22PCh. 9 - Prob. 9.23PCh. 9 - Problem 9.22 Draw the organic products formed in...Ch. 9 - Problem 9.23 Draw two steps to convert into each...Ch. 9 - Draw the products of each reaction, and indicate...Ch. 9 - Draw the products of each reaction, and include...Ch. 9 - Draw the products formed when (S)-butan-2-ol is...Ch. 9 - Prob. 9.29PCh. 9 - Prob. 9.30PCh. 9 - Explain why the treatment of anisole with HBr...Ch. 9 - Prob. 9.32PCh. 9 - The cis and trans isomers of 2, 3-dimethyloxirane...Ch. 9 - Problem 9.36 Draw the product of each...Ch. 9 - 9.37 Name each compound depicted in the...Ch. 9 - Answer each question using the ball-and-stick...Ch. 9 - Prob. 9.37PCh. 9 - a. Draw the structure of 1, 2, and 3 alcohol with...Ch. 9 - Give IUPAC name for each alcohol. a....Ch. 9 - Name each ether and epoxide. a.b.c.d.Ch. 9 - Prob. 9.41PCh. 9 - Draw the eight constitutional isomers with...Ch. 9 - Rank each group of compounds in order of: a....Ch. 9 - Prob. 9.44PCh. 9 - 9.44 Why is the boiling point of higher than...Ch. 9 - Draw the organic products formed when CH3CH2CH2OH...Ch. 9 - Draw the organic products formed when 1-methyl...Ch. 9 - What alkenes are formed when each alcohol is...Ch. 9 - Prob. 9.49PCh. 9 - Prob. 9.50PCh. 9 - 9.48 Draw the products of each reaction and...Ch. 9 - Prob. 9.52PCh. 9 - 9.52 Draw a stepwise mechanism for the following...Ch. 9 - 9.53 Although alcohol V gives a single alkene W...Ch. 9 - Prob. 9.55PCh. 9 - Prob. 9.56PCh. 9 - Prob. 9.57PCh. 9 - When CH3CH2CH2CH2OH is treated with H2SO4 NaBr,...Ch. 9 - 9.57 Draw a stepwise, detailed mechanism for the...Ch. 9 - Prob. 9.60PCh. 9 - Draw two different routes to each of the following...Ch. 9 - Prob. 9.62PCh. 9 - Prob. 9.63PCh. 9 - 9.62 Draw a stepwise mechanism for each...Ch. 9 - Draw a stepwise, detailed mechanism for the...Ch. 9 - Prob. 9.66PCh. 9 - Draw the products of each reaction. a.c. b.d.Ch. 9 - When each halohydrin is treated with, a product of...Ch. 9 - Prob. 9.69PCh. 9 - Devise a stepwise mechanism for the following...Ch. 9 - Draw the products of each reaction, and indicate...Ch. 9 - Prepare each compound from CH3CH2CH2CH2OH. More...Ch. 9 - Prepare each compound from cyclopentanol. More...Ch. 9 - 9.72 Identify the reagents (a–h) needed to carry...Ch. 9 - Prob. 9.75PCh. 9 - 9.74 Treatment of with affords compound A and ....Ch. 9 - Prob. 9.77PCh. 9 - Prob. 9.78PCh. 9 - 9.77 Draw a stepwise, detailed mechanism for the...Ch. 9 - Dehydration of 1, 2, 2-trimethylcyclohexanol with...Ch. 9 - Prob. 9.81PCh. 9 - 9.80 Draw a stepwise mechanism for the following...Ch. 9 -
9.81 Aziridines are heterocycles that contain an...
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- Explain the following observation. Ethyl 3-phenylpropanoate (C6H5CH2CH2CO2CH2CH3) reacts with electrophiles to afford ortho- and para-disubstituted arenes, but ethyl 3-phenylprop-2-enoate (C6H5CH= CHCO2CH2CH3) reacts with electrophiles to afford meta-disubstituted arenes.arrow_forwardAcid-catalyzed bromination of pentan-2-one (CH3COCH2CH2CH3) forms two products: BrCH2COCH2CH2CH3 (A)and CH3COCH(Br)CH2CH3 (B). Explain why the major product is B, with the Br atom on the more substituted side of the carbonyl group.arrow_forwardThese reagents can produce ketones with alkynes A. BH3, THF, H2O2 B. KMnO4 C. O3 D. H2SO4, H2O, HgSO4 choices:A,DB,CA,B,CA,B,C,Darrow_forward
- When 2-bromo-3-phenylbutane is treated with sodium methoxide, two alkenes result (by E2 elimination). The Zaitsevproduct predominates.(a) Draw the reaction, showing the major and minor products.(b) When one pure stereoisomer of 2-bromo-3-phenylbutane reacts, one pure stereoisomer of the major product results.For example, when (2R,3R)-2-bromo-3-phenylbutane reacts, the product is the stereoisomer with the methyl groups cis.Use your models to draw a Newman projection of the transition state to show why this stereospecificity is observedarrow_forwardWhen 2-bromo-3-phenylbutane is treated with sodium methoxide, two alkenes result (by E2 elimination). The Zaitsevproduct predominates.(a) Draw the reaction, showing the major and minor products.(b) When one pure stereoisomer of 2-bromo-3-phenylbutane reacts, one pure stereoisomer of the major product results.For example, when (2R,3R)-2-bromo-3-phenylbutane reacts, the product is the stereoisomer with the methyl groups cis.Use your models to draw a Newman projection of the transition state to show why this stereospecificity is observed.(c) Use a Newman projection of the transition state to predict the major product of elimination of (2S,3R)-2-bromo-3-phenylbutanearrow_forwardExplain how the reaction of (CH3)2CHCH(Cl)CH3 with H2O yields two substitutionproducts, (CH3)2CHCH(OH)CH3 and (CH3)2C(OH)CH2CH3arrow_forward
- Reaction of (CH3)3CCHO with (C6H5)3P=C(CH3)OCH3, followed by treatment with aqueous acid, affords R (C7H14O). R has a strong absorption in its IR spectrum at 1717 cm−1 and three singlets in its 1H NMR spectrum at 1.02 (9 H), 2.13 (3 H), and 2.33 (2 H) ppm. What is the structure of R? We will learn about this reaction in Chapter 18.arrow_forwardAcid-catalyzed hydrolysis of the following epoxide gives a trans diol. Of the two possible trans diols, only one is formed. How do you account for this stereoselectivity?arrow_forwardTreating 4-penten-1-ol with bromine in water forms a cyclic bromoether. Account for the formation of this product rather than a bromohydrin as was formed in Problem 6.33arrow_forward
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