How many isomers are there of C3H6O (acetone)?

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Answer 1 · 2015-11-18T00:41:28

I count nine isomers.

With a #"C=O"# double bond

1. Acetone, #"CH"_3"COCH"_3#

2. Propionaldehyde, #"CH"_3"CH"_2"CHO"#

With a #"C=C"# double bond and an #"OH"# group

3. Allyl alcohol, #"H"_2"C=CHCH"_2"OH"#

4. Prop-2-en-1-ol, #"H"_2"C=C(OH)CH"_3# (the enol tautomer of acetone)

5. Prop-1-en-1-ol, #"HOCH=CHCH"_3# (the enol tautomer of acetaldehyde)

With a #"C=C"# double bond and an ether

6. #"H"_2"C=CHOCH"_3#, methyl vinyl ether

With a ring and an #"OH"# group

7. Cyclopropyl alcohol

With a ring and an ether group

8. Propylene oxide

9. Trimethylene oxide

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Any others?