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Organic And Biological Chemistry

7th Edition
STOKER + 1 other
ISBN: 9781305081079

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Chapter
Section
BuyFindarrow_forward

Organic And Biological Chemistry

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

The IUPAC name for the aldehyde Chapter 4.4, Problem 1QQ, The IUPAC name for the aldehyde is a. propyl aldehyde b. propanal c. butanal d. no correct response is

  1. a. propyl aldehyde
  2. b. propanal
  3. c. butanal
  4. d. no correct response

Interpretation Introduction

Interpretation:

IUPAC name for the given aldehyde has to be chosen from the given options.

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.
Explanation

Reason for correct option:

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 four carbon chain.  Hence, the parent alkane is butane.  The aldehyde is named by replacing the suffix “-e” in the alkane name with “-al”.  This gives the name of aldehyde as butanal.

Looking for substituents it is found that there are no substituents present on the carbon chain.  Hence, the IUPAC name of the given aldehyde is butanal...

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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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