EBK ORGANIC CHEMISTRY
EBK ORGANIC CHEMISTRY
8th Edition
ISBN: 9781319188962
Author: VOLLHARDT
Publisher: VST
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Chapter 3, Problem 18P

(a)

Interpretation Introduction

Interpretation: Various products formed from the pyrolysis of butane with regard to only C – C bond cleavage as initial step should be written.

Concept introduction: Long-chain petroleum hydrocarbons can be broken down unless highly elevated temperatures are used. At extremely elevated temperature the C–C bond and C – H undergoes homolytic cleavage. This process generates radicals and is essentially the first step of pyrolysis. If no oxygen is available the radical formed in initial phase may recombine with one another and result in variety of alkanes. For example, the pyrolysis of hexane occurs via homolytic fission of either C1–C2 or C2–C3 or C3–C4. The radicals generated undergo combinations as illustrated below:

  EBK ORGANIC CHEMISTRY, Chapter 3, Problem 18P , additional homework tip  1

Thus the products have new covalent bonds formed as results of electrons contributed from different atoms.

(b)

Interpretation Introduction

Interpretation: Various products formed from the pyrolysis of 2-methylpropane with regard to only C – C bond cleavage as initial step should be written.

Concept introduction: : Long-chain petroleum hydrocarbons can be broken down unless highly elevated temperatures are used. At extremely elevated temperature the C–C bond and C – H undergoes homolytic cleavage. This process generates radicals and is essentially the first step of pyrolysis. If no oxygen is available the radical formed in initial phase may recombine with one another and result in variety of alkanes. For example, the pyrolysis of hexane occurs via homolytic fission of either C1–C2 or C2–C3 or C3–C4. The radicals generated undergo combinations as illustrated below:

  EBK ORGANIC CHEMISTRY, Chapter 3, Problem 18P , additional homework tip  2

Thus the products have new covalent bonds formed as results of electrons contributed from different atoms.

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Predict the major products of the following organic reaction: + Some important notes: A ? • Draw the major product, or products, of the reaction in the drawing area below. • If there aren't any products, because no reaction will take place, check the box below the drawing area instead. • Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are enantiomers. Explanation Check Click and drag to start drawing a structure.
if the answer is no reaction than state that and please hand draw!
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