2-methyl-1-propene molecule

quicksilver123

I've attached the image. Is the naming of this molecule correct?


If so, why is the methyl prefix necessary? The three carbon chain + the double bond makes it 1-propene....

If not, would the correct name be methylethene?

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Traxfam

propene is the correct name the 1 is not necessary, more commonly it is known as propylene

quicksilver123

Thanks. So methylethene=propene?

Traxfam

Not quite, it is just propene 3 carbons one double bond. I am not sure where the methyl propene came from. 2-Methyl propene would have four carbons it is also known as isobutylene, here is a link

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