Assignment 5 �?Aldehydes & Ketones
3a is ethanal (acetyaldehyde) not ethanol (have to be careful with the a's and o's with aldehyde and alcohol names!).
3b is 3-hexanone (don't forget the n).
3d �?Number the main chain starting from the end that has the carbonyl group (C=O) closest to it.
3f �?Check the group!
3h is benzaldehyde. 3i is also named as a benzaldehyde.
3j �?Don't forget to include the position of the carbonyl group! The structure is missing a hydrogen on carbon 5.
4c is actually named incorrectly in the question. It should be named 4-ethyl-3-hexanone rather than "3-ethyl-4-hexanone" because the main chain should be numbered starting from the end that has the carbonyl group closest to it, not the ethyl group. The structure is still OK though.
4d �?To do.. (benzene rings more trouble to make!)
4e, "2-ethyl-5-methyl-3-pentanone" is also named incorrectly in the question. It should be called 3-methyl-4-heptanone. Check the hydrogens in your structure!
4g �?Check them H's !
4h �?To do..
4j �?Formaldehyde; the structure just needs an H.
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