Draw 4 isomers of an aldehyde C5H10O

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SUMMARY

The discussion focuses on identifying four isomers of the aldehyde C5H10O, specifically pentanal, 3-methylbutanal, 2-methylbutanal, and 2,2-dimethylpropanal. Participants clarify the correct nomenclature, emphasizing the importance of accurate IUPAC naming conventions. The conversation highlights the challenges of working with isomers and the necessity of careful structural analysis to avoid errors in naming. Ultimately, the correct identification of the isomers is confirmed, showcasing the collaborative nature of problem-solving in organic chemistry.

PREREQUISITES
  • Understanding of organic chemistry nomenclature, particularly IUPAC naming conventions.
  • Familiarity with the concept of isomers and structural representations of organic compounds.
  • Knowledge of aldehyde functional groups and their properties.
  • Basic skills in drawing chemical structures and recognizing carbon chain configurations.
NEXT STEPS
  • Research the structural characteristics of aldehydes and their isomers.
  • Learn about the process of drawing and identifying isomers in organic chemistry.
  • Study IUPAC naming rules for complex organic molecules.
  • Explore examples of isomerism in other functional groups beyond aldehydes.
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Chemistry students, organic chemists, and educators looking to deepen their understanding of aldehyde isomers and nomenclature practices.

Mitchtwitchita
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Hey Guys,

I have a question that says to draw 4 isomers of an aldehyde C5H10O and I can only find three (pentanal, 3-methylbutanal, and 2-methylbutanal). Can anybody help with a fourth?
 
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Something like that came up on one of these forums a few weeks ago. This is a permutation or combination type problem. ?? ?

... I found 4 of them. What is tried was setup two neighboring carbons; put the aldehyde group on the lefthand side carbon. The form which you seem to have missed is 2,2-dimethylpentanal.

Maybe all that could be mathemetized, but I just made trials until I could not find anymore.
 
Thanks Symbolipoint! Working with isomers can be a little tedious. But wouldn't that be 2,2-dimethylpropanal
 
Correct. 2,2-dimethylpentanal would have 7 carbons. A minor nomenclature error (in this forum at least).
 
Mitchtwitchita said:
Thanks Symbolipoint! Working with isomers can be a little tedious. But wouldn't that be 2,2-dimethylpropanal

You are correct. I really should have been more careful and gave the proper IUPAC name the first time. The isomer has three carbons in a straight chain part, justifying the "propanal" part of the name.
 

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