Organic Chemistry
Organic Chemistry
5th Edition
ISBN: 9780078021558
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
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Chapter 9, Problem 9.79P
Interpretation Introduction

(a)

Interpretation: A stepwise mechanism for the given reaction is to be drawn.

Concept introduction: Pinacol rearrangement is also termed as Pinacol-Pinacolone rearrangement. This rearrangement reaction is an acid catalyzed conversion of 1, 2-diols into carbonyl compounds. The reactant of the reaction is named as pinacol and the product of the reaction is named as pinacolone.

Interpretation Introduction

(b)

Interpretation: The rearrangement product formed from diol D is to be drawn.

Concept introduction: Pinacol rearrangement is also termed as Pinacol-Pinacolone rearrangement. This rearrangement reaction is an acid catalyzed conversion of 1, 2-diols into carbonyl compounds. The reactant of the reaction is named as pinacol and the product of the reaction is named as pinacolone.

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1,2-Diols are converted to carbonyl compounds when treated with strong acids, in a reaction called the pinacol rearrangement. (a) Draw a stepwise mechanism for this reaction. (Hint: The reaction proceeds by way of carbocation intermediates.) (b) Assuming that the pinacol rearrangement occurs via the more stable carbocation, draw the rearrangement product formed from diol D.
1) The carbon-oxygen double bond present in aldehydes and ketones is very polar. What does this mean and how does it arise? 2) The carbon-oxygen double bond is readily attacked by nucleophiles like cyanide ions or ammonia.           (i) What do you understand by the term nucleophile?           (ii) Which part of the carbon-oxygen double bond is attractive to nucleophiles? 3) Why is there a difference between aldehydes and ketones in their response to oxidizing agents such as potassium dichromate(VI) solution acidified with dilute sulfuric acid?
(a) Draw a specific organic reaction for the halohydrin formation addition reaction of alkenes. (b) Also write the reagents involved in the reaction (c) and name and identify its major and minor product by writing its IUPAC name.

Chapter 9 Solutions

Organic Chemistry

Ch. 9 - Problem 9.11 Draw the products formed when each...Ch. 9 - Prob. 9.12PCh. 9 - Problem 9.13 Draw the structure of each...Ch. 9 - What other alkene is also formed along with Y in...Ch. 9 - Prob. 9.15PCh. 9 - Explain why two substitution products are formed...Ch. 9 - Draw the products of each reaction. a. b. c.Ch. 9 - Problem 9.18 Draw the products of each reaction,...Ch. 9 - Problem 9.19 What is the major product formed...Ch. 9 - Prob. 9.20PCh. 9 - Prob. 9.21PCh. 9 - Problem 9.22 Draw the organic products formed in...Ch. 9 - Problem 9.23 Draw two steps to convert into each...Ch. 9 - Prob. 9.24PCh. 9 - Problem 9.25 Draw the products of each reaction,...Ch. 9 - Draw the products formed when (S)-butan-2-ol is...Ch. 9 - Draw the product formed when (CH3)2CHOH is treated...Ch. 9 - What alkyl halides are formed when each ether is...Ch. 9 - Explain why the treatment of anisole with HBr...Ch. 9 - Name each thiol. a. b. Ch. 9 - Draw the product of each reaction. ac b.d.Ch. 9 - Give the IUPAC name for each sulfide. a. b. Ch. 9 - Draw the product of each reaction. a. b. Ch. 9 - Prob. 9.34PCh. 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. 9.39PCh. 9 - 9.40 Give IUPAC name for each...Ch. 9 - Prob. 9.41PCh. 9 - Prob. 9.42PCh. 9 - Prob. 9.43PCh. 9 - 9.44 Why is the boiling point of higher than...Ch. 9 - 9.45 Draw the organic product(s) formed when is...Ch. 9 - 9.46 What alkenes are formed when each alcohol is...Ch. 9 - Prob. 9.47PCh. 9 - 9.48 Draw the products of each reaction and...Ch. 9 - 9.49 Draw the product of the following reaction,...Ch. 9 - Prob. 9.50PCh. 9 - Prob. 9.51PCh. 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. 9.54PCh. 9 - Prob. 9.55PCh. 9 - Prob. 9.56PCh. 9 - 9.57 Draw a stepwise, detailed mechanism for the...Ch. 9 - Prob. 9.58PCh. 9 - 9.59 Draw two different routes to each of the...Ch. 9 - Prob. 9.60PCh. 9 - 9.61 Draw the products formed when each ether is...Ch. 9 - 9.62 Draw a stepwise mechanism for each...Ch. 9 - Draw a stepwise, detailed mechanism for the...Ch. 9 - Prob. 9.64PCh. 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. 9.67PCh. 9 - Prob. 9.68PCh. 9 - Prob. 9.69PCh. 9 - Prob. 9.70PCh. 9 - Prepare each compound from cyclopentanol. More...Ch. 9 - 9.72 Identify the reagents (a–h) needed to carry...Ch. 9 - Prob. 9.73PCh. 9 - 9.74 Treatment of with affords compound A and ....Ch. 9 - Prob. 9.75PCh. 9 - Prob. 9.76PCh. 9 - 9.77 Draw a stepwise, detailed mechanism for the...Ch. 9 - 9.78 Dehydration of with affords as a minor...Ch. 9 - Prob. 9.79PCh. 9 - 9.80 Draw a stepwise mechanism for the following...Ch. 9 - 9.81 Aziridines are heterocycles that contain an...
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