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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: confused3 on January 15, 2017, 12:26:09 PM

Title: IUPAC name
Post by: confused3 on January 15, 2017, 12:26:09 PM

What is the correct IUPAC name for the following structure:
CH2=CH-CH2-CH3


The way the professor has been teaching this, the name I came up with was

but-1-ene

but when entered into our homework post online, it was incorrect. I googled what but-1-ene would look like and the image that came up was the exact image on my homework. Someone help please?

Title: Re: IUPAC name
Post by: AWK on January 15, 2017, 12:46:11 PM

For structure presented in the post above this is a correct IUPAC name. It may be abbreviated to butene.

Title: Re: IUPAC name
Post by: mjc123 on January 16, 2017, 04:50:36 AM

Also sometimes called 1-butene. I was taught it your way, but I get the impression this is more popular these days.

Title: Re: IUPAC name
Post by: Dan on January 16, 2017, 06:12:25 AM

But-1-ene is definitely the currently preferred IUPAC name.

1-Butene is also commonly used, I think this was the IUPAC name before the 1997 IUPAC Blue Book was published, but I'm not 100% sure on that.

Title: Re: IUPAC name
Post by: confused3 on January 23, 2017, 09:09:00 PM

1-butene seemed to be the answer my online assignment preferred. Thank you!