EBK ORGANIC CHEMISTRY
8th Edition
ISBN: 8220102744127
Author: Bruice
Publisher: PEARSON
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Question
Chapter 28.5, Problem 12P
(a)
Interpretation Introduction
Interpretation: The kind of sigmatropic rearrangement that occurs in each of the given reactions has to be given.
Concept introduction:
Pericyclic reactions are “ any concerted reaction in which bonds are formed or brocken in a cyclic transition state”. There is a single transition state from start to finish, in contrast to a stepwise reaction.
There are mainly three types of pericyclic reactions,
- 1) Electrocyclic reactions
- 2) Cycloaddition reactions
- 3) Sigmatropic reactions
In a sigmatropic reaction “ one new sigma-bond is formed as another breaks.”
Sigmatropic rearrangement reactions are named with digits. For example a [1, 3] sigmatropic rearrangement describe a reaction in which the residue migrates from position 1 to position 3.
(b)
Interpretation Introduction
Interpretation: Using arrows the electron rearrangement takes place in the given reactions has to be shown.
Concept introduction:
Pericyclic reactions are “ any concerted reaction in which bonds are formed or brocken in a cyclic transition state”. There is a single transition state from start to finish, in contrast to a stepwise reaction.
There are mainly three types of pericyclic reactions,
- 1) Electrocyclic reactions
- 2) Cycloaddition reactions
- 3) Sigmatropic reactions
In a sigmatropic reaction “ one new sigma-bond is formed as another breaks.”
Sigmatropic rearrangement reactions are named with digits. For example a [1, 3] sigmatropic rearrangement describe a reaction in which the residue migrates from position 1 to position 3.
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Students have asked these similar questions
1.
Part 1: Naming Organic Compounds
он
H₁C-C-CH3
CH3
Br
CI CI
2. Br-CH-CH-CH₂
H₂C-CH-C= -CH-CH2-CH3
3.
HC-CH-CH-C-OH
5. H₂C-CH-CH₂-OH
7.
OH
4.
CH
CH₂-CH₂
6.
сно
CH-CH-CH-CH₂-CH₂
H₁₂C-CH-CH-CH-CH₁₂-CH₁₂
8.
OH
11
Organic Chemistry
Organic Nomenclature Practice
Name/Functional Group
n-butane
Formula
Structural Formula
(1) C4tt10
H3C
C-
(2) CH3CH2CH2 CH 3
H₂
-CH3
Н2
name & functional group
(1) and (2)
OH
H₁₂C
Н2
name only
(1) and (2)
name only
(1) and (2)
H₁C - = - CH₂
Н2
HC=C-C
CH3
Under aqueous basic conditions, nitriles will react to form a neutral organic intermediate 1 that has an N atom in it first, and then they will continue to react to
form the final product 2:
NC
H₂O
он-
H₂O
1
2
OH
Draw the missing intermediate 1 and the final product 2 in the box below. You can draw the two structures in any arrangement you like.
Click and drag to start drawing a
structure.
Chapter 28 Solutions
EBK ORGANIC CHEMISTRY
Ch. 28.1 - Prob. 1PCh. 28.2 - Prob. 2PCh. 28.2 - Prob. 3PCh. 28.2 - Give a molecular orbital description for each of...Ch. 28.3 - Prob. 5PCh. 28.3 - Prob. 6PCh. 28.3 - Prob. 7PCh. 28.3 - Prob. 8PCh. 28.4 - Prob. 10PCh. 28.4 - Prob. 11P
Ch. 28.5 - Prob. 12PCh. 28.5 - a. Draw the product of the following reaction: b....Ch. 28.5 - Prob. 14PCh. 28.5 - Prob. 15PCh. 28.5 - Prob. 17PCh. 28.5 - Prob. 18PCh. 28.6 - Prob. 19PCh. 28.6 - Explain why the hydrogen and the methyl...Ch. 28.6 - Chorismate mutase is an enzyme that promotes a...Ch. 28.7 - Convince yourself that the TE-AC method for...Ch. 28 - Draw the product of each of the following...Ch. 28 - Draw the product of each of the following...Ch. 28 - Prob. 25PCh. 28 - Show how norbornance can be prepared from...Ch. 28 - Prob. 27PCh. 28 - Prob. 28PCh. 28 - Draw the product of each of the following...Ch. 28 - Prob. 30PCh. 28 - Prob. 31PCh. 28 - Prob. 32PCh. 28 - Prob. 33PCh. 28 - When the following compound is heated, a product...Ch. 28 - Prob. 35PCh. 28 - Propose a mechanism for the following reaction:Ch. 28 - Prob. 37PCh. 28 - Prob. 38PCh. 28 - Prob. 39PCh. 28 - Prob. 40PCh. 28 - If isomer A is heated to about 100 C, a mixture of...Ch. 28 - Propose a mechanism for the following reaction:Ch. 28 - Prob. 43PCh. 28 - A student found that heating any one of the...Ch. 28 - Prob. 45PCh. 28 - Prob. 46PCh. 28 - Prob. 47P
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