Can someone tell me what this is?

Also, in refers to chem formula in the OP:

(CH3)2C=C(CH3)OH

which is C5H10O, these may refer to:

• Cyclopentanol
• Methyl isopropyl ketone
• Pentanal
• 2-Pentanone
• 3-Pentanone
• Prenol = 3-methyl-2-buthenol
• Tetrahydropyran

http://en.wikipedia.org/wiki/C5H10O

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Exactly

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Thanks! So it definitely is an alkene, I knew that. 3-methyl-2-buthenol ... thanks again... It definitely seems right.

 

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yes yes and it is represented by the e in buthenol.

 

No one has pointed this out yet, but the molecule that you have asked about is very unlikely to exist. It’s an enol, which are not stable. Any time you have an alcohol OH group next to an alkene double bond it will usually rearrange to make a ketone.

And no, contrary to what some people here have said, it is not prenol. The molecule that you describe has a methyl group and a hydroxyl group both attatched to a double-bonded carbon. Prenol (3-methyl-2-buthenol) has a different strucure.

 

What LittleBlackDress asked about:

CH3.........CH3
...... \ .... /
....... C=C
...... / .... \
CH3 ....... OH



Prenol:

CH3 ...... CH2-OH
...... \ .... /
...... C=CH
...... /
CH3

 

Hmm ok.
Do you know the structure and the name ?

 

Unless I'm mistaken, the names of Nasor's posted chemicals are:
3-methyl-2-buten-2-ol
and
3-methyl-2-buten-1-ol (ie Prenol)
respectivly

-Andrew

 

Actually I did already answer like this in post #8 and #10:

but then I did not know the name for the first one (which littleblackdress
actually asked). It reminds me to a geometric isomer, only that one methyl
is replaced by -OH. I answer like that, but after around an hour I deleted the
post. The thing is, when I googling in wikipedia on C5H10O, the chemical
under the question does not exist. The closest one is prenol, so I thought
littleblackdress made a slight mistake in putting the bracket,
instead of (CH3)2C=CHCH2OH

(s)he wrote: (CH3)2C=C(CH3)OH

I believe thats the name. :bravo:

 

I don't think it could exist. Most enols are unstable.

 

Nazor is right. It was prenol. That is correct. My notation was incorrect. inzomnia's molecule is, I believe, correct.

CH3 ...... CH2-OH
...... \ .... /
...... C=CH
...... /
CH3

p.s. Maybe a blonde moment? I'm not a blonde though.. hmmm...