1,3-Butene or Butene

[phee]

Is this

1,3 -butene?

or just plain butene?

http://i51.tinypic.com/2d7ufcp.png

[viciousp]

It is actually 1,3-butadiene

[phee]

So if there is two double bonds its di-"prefix"-ede ?

[Borek]

It is diene, no idea what you wrote - seems completely unrelated.

Technically correct IUPAC name is probably but-1,3-diene, but I am not going to pretend I am expert on organic nomenclature.

[gabriels-horn]

So if there is two double bonds its di-"prefix"-ede ?

That is correct, 'ene' though, not 'ede'

[Borek]

So if there is two double bonds its di-"prefix"-ede ?

That is correct, 'ene' though, not 'ede'

Somehow I fail to see "prefix" between di and ene.

[gabriels-horn]

Somehow I fail to see "prefix" between di and ene.

Yea completely fell asleep on that reply, prefix before diene.

[phee]

Thanks, I understand now