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Organic And Biological Chemistry

7th Edition
STOKER + 1 other
ISBN: 9781305081079

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Section
BuyFindarrow_forward

Organic And Biological Chemistry

7th Edition
STOKER + 1 other
ISBN: 9781305081079
Textbook Problem

Assign an IUPAC name to each of the following aldehydes.

Chapter 4, Problem 4.19EP, Assign an IUPAC name to each of the following aldehydes. , example  1

Chapter 4, Problem 4.19EP, Assign an IUPAC name to each of the following aldehydes. , example  2

Chapter 4, Problem 4.19EP, Assign an IUPAC name to each of the following aldehydes. , example  3

Chapter 4, Problem 4.19EP, Assign an IUPAC name to each of the following aldehydes. , example  4

(a)

Interpretation Introduction

Interpretation:

IUPAC name for the given aldehyde has to be assigned.

Concept Introduction:

For naming an aldehyde in IUPAC nomenclature, the suffix “-al” is added to the parent alkane name.

IUPAC rules for naming an aldehyde:

  • • The longest parent carbon chain is identified that includes the carbonyl group.
  • • The parent chain name is changed by replacing the suffix “-e” with “-al”.
  • • Numbering is done in a way that the carbonyl group is designated as number 1.  This is not indicated in the part of the name because for aldehyde, the carbonyl carbon is always numbered 1.
  • • The identity and location of substituents if any has to be determined and this information has to be added in front of the IUPAC name.
  • • If the carbonyl functional group is attached to a ring of carbon atoms, the ring is named and “-carbaldehyde” is added as suffix.

In a line-angle structural formula, the end point and the point where two lines intersect represent a carbon atom.

Explanation

Given structure of aldehyde is,

The longest continuous carbon chain has to be found out with the carbonyl group in it.  In this it is a five carbon chain.  Hence, the parent alkane is pentane.  The aldehyde is named by replacing the suffix “-e” in the alkane name with “-al”.  This gives the name of aldehyde as pentanal...

(b)

Interpretation Introduction

Interpretation:

IUPAC name for the given aldehyde has to be assigned.

Concept Introduction:

For naming an aldehyde in IUPAC nomenclature, the suffix “-al” is added to the parent alkane name.

IUPAC rules for naming an aldehyde:

  • • The longest parent carbon chain is identified that includes the carbonyl group.
  • • The parent chain name is changed by replacing the suffix “-e” with “-al”.
  • • Numbering is done in a way that the carbonyl group is designated as number 1.  This is not indicated in the part of the name because for aldehyde, the carbonyl carbon is always numbered 1.
  • • The identity and location of substituents if any has to be determined and this information has to be added in front of the IUPAC name.
  • • If the carbonyl functional group is attached to a ring of carbon atoms, the ring is named and “-carbaldehyde” is added as suffix.

In a line-angle structural formula, the end point and the point where two lines intersect represent a carbon atom.

(c)

Interpretation Introduction

Interpretation:

IUPAC name for the given aldehyde has to be assigned.

Concept Introduction:

For naming an aldehyde in IUPAC nomenclature, the suffix “-al” is added to the parent alkane name.

IUPAC rules for naming an aldehyde:

  • • The longest parent carbon chain is identified that includes the carbonyl group.
  • • The parent chain name is changed by replacing the suffix “-e” with “-al”.
  • • Numbering is done in a way that the carbonyl group is designated as number 1.  This is not indicated in the part of the name because for aldehyde, the carbonyl carbon is always numbered 1.
  • • The identity and location of substituents if any has to be determined and this information has to be added in front of the IUPAC name.
  • • If the carbonyl functional group is attached to a ring of carbon atoms, the ring is named and “-carbaldehyde” is added as suffix.

In a line-angle structural formula, the end point and the point where two lines intersect represent a carbon atom.

(d)

Interpretation Introduction

Interpretation:

IUPAC name for the given aldehyde has to be assigned.

Concept Introduction:

For naming an aldehyde in IUPAC nomenclature, the suffix “-al” is added to the parent alkane name.

IUPAC rules for naming an aldehyde:

  • • The longest parent carbon chain is identified that includes the carbonyl group.
  • • The parent chain name is changed by replacing the suffix “-e” with “-al”.
  • • Numbering is done in a way that the carbonyl group is designated as number 1.  This is not indicated in the part of the name because for aldehyde, the carbonyl carbon is always numbered 1.
  • • The identity and location of substituents if any has to be determined and this information has to be added in front of the IUPAC name.
  • • If the carbonyl functional group is attached to a ring of carbon atoms, the ring is named and “-carbaldehyde” is added as suffix.

In a line-angle structural formula, the end point and the point where two lines intersect represent a carbon atom.

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Sect-4.4 P-3QQSect-4.4 P-4QQSect-4.4 P-5QQSect-4.5 P-1QQSect-4.5 P-2QQSect-4.5 P-3QQSect-4.5 P-4QQSect-4.5 P-5QQSect-4.6 P-1QQSect-4.6 P-2QQSect-4.6 P-3QQSect-4.7 P-1QQSect-4.7 P-2QQSect-4.8 P-1QQSect-4.8 P-2QQSect-4.9 P-1QQSect-4.9 P-2QQSect-4.10 P-1QQSect-4.10 P-2QQSect-4.10 P-3QQSect-4.10 P-4QQSect-4.11 P-1QQSect-4.11 P-2QQSect-4.11 P-3QQSect-4.11 P-4QQSect-4.11 P-5QQSect-4.12 P-1QQSect-4.12 P-2QQCh-4 P-4.1EPCh-4 P-4.2EPCh-4 P-4.3EPCh-4 P-4.4EPCh-4 P-4.5EPCh-4 P-4.6EPCh-4 P-4.7EPCh-4 P-4.8EPCh-4 P-4.9EPCh-4 P-4.10EPCh-4 P-4.11EPCh-4 P-4.12EPCh-4 P-4.13EPCh-4 P-4.14EPCh-4 P-4.15EPCh-4 P-4.16EPCh-4 P-4.17EPCh-4 P-4.18EPCh-4 P-4.19EPCh-4 P-4.20EPCh-4 P-4.21EPCh-4 P-4.22EPCh-4 P-4.23EPCh-4 P-4.24EPCh-4 P-4.25EPCh-4 P-4.26EPCh-4 P-4.27EPCh-4 P-4.28EPCh-4 P-4.29EPCh-4 P-4.30EPCh-4 P-4.31EPCh-4 P-4.32EPCh-4 P-4.33EPCh-4 P-4.34EPCh-4 P-4.35EPCh-4 P-4.36EPCh-4 P-4.37EPCh-4 P-4.38EPCh-4 P-4.39EPCh-4 P-4.40EPCh-4 P-4.41EPCh-4 P-4.42EPCh-4 P-4.43EPCh-4 P-4.44EPCh-4 P-4.45EPCh-4 P-4.46EPCh-4 P-4.47EPCh-4 P-4.48EPCh-4 P-4.49EPCh-4 P-4.50EPCh-4 P-4.51EPCh-4 P-4.52EPCh-4 P-4.53EPCh-4 P-4.54EPCh-4 P-4.55EPCh-4 P-4.56EPCh-4 P-4.57EPCh-4 P-4.58EPCh-4 P-4.59EPCh-4 P-4.60EPCh-4 P-4.61EPCh-4 P-4.62EPCh-4 P-4.63EPCh-4 P-4.64EPCh-4 P-4.65EPCh-4 P-4.66EPCh-4 P-4.67EPCh-4 P-4.68EPCh-4 P-4.69EPCh-4 P-4.70EPCh-4 P-4.71EPCh-4 P-4.72EPCh-4 P-4.73EPCh-4 P-4.74EPCh-4 P-4.75EPCh-4 P-4.76EPCh-4 P-4.77EPCh-4 P-4.78EPCh-4 P-4.79EPCh-4 P-4.80EPCh-4 P-4.81EPCh-4 P-4.82EPCh-4 P-4.83EPCh-4 P-4.84EPCh-4 P-4.85EPCh-4 P-4.86EPCh-4 P-4.87EPCh-4 P-4.88EPCh-4 P-4.89EPCh-4 P-4.90EPCh-4 P-4.91EPCh-4 P-4.92EPCh-4 P-4.93EPCh-4 P-4.94EPCh-4 P-4.95EPCh-4 P-4.96EPCh-4 P-4.97EPCh-4 P-4.98EPCh-4 P-4.99EPCh-4 P-4.100EPCh-4 P-4.101EPCh-4 P-4.102EPCh-4 P-4.103EPCh-4 P-4.104EPCh-4 P-4.105EPCh-4 P-4.106EPCh-4 P-4.107EPCh-4 P-4.108EPCh-4 P-4.109EPCh-4 P-4.110EPCh-4 P-4.111EPCh-4 P-4.112EPCh-4 P-4.113EPCh-4 P-4.114EPCh-4 P-4.115EPCh-4 P-4.116EPCh-4 P-4.117EPCh-4 P-4.118EP

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