quiz 3 prep 1 number 4

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Dahriel Aron 3A
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Joined: Fri Sep 25, 2015 3:00 am

quiz 3 prep 1 number 4

Postby Dahriel Aron 3A » Mon Feb 29, 2016 7:38 pm

For this question it asks to draw 7-flouro-3-methyl-4-vinyl-nonane, However in the answer the longest chain only has 8 carbons even though its nonane (9 carbons) and there is a double bond even though it is -ane not -ene so I'm confused why this is. Also, I thought vinyl meant c2h3R and I do not see where vinyl is incorporated into the answer given in the back.

Jamlah Dalie 1K
Posts: 62
Joined: Fri Sep 25, 2015 3:00 am

Re: quiz 3 prep 1 number 4

Postby Jamlah Dalie 1K » Mon Feb 29, 2016 8:29 pm

So when we're looking for the longest chain, the double bond isn't always included if it doesn't help us find the longest chain, so that double bond is the vinyl, since vinyl is -CH=CH2. Try numbering from the carbon that is the highest to the right and then start curving it down towards the left and then follow it all the way to the far right.

Matt Jacobs 3H
Posts: 32
Joined: Fri Sep 25, 2015 3:00 am

Re: quiz 3 prep 1 number 4

Postby Matt Jacobs 3H » Mon Feb 29, 2016 8:48 pm

How do you know what vinyl is? I've never heard of it before is it somewhere in the book?

Carmille Vega 1C
Posts: 17
Joined: Wed Oct 07, 2015 3:00 am

Re: quiz 3 prep 1 number 4

Postby Carmille Vega 1C » Tue Mar 01, 2016 10:15 am

Vinyl is on page 97 of the yellow course reader. It's H2C=CH-

Dahriel Aron 3A
Posts: 60
Joined: Fri Sep 25, 2015 3:00 am

Re: quiz 3 prep 1 number 4

Postby Dahriel Aron 3A » Wed Mar 02, 2016 12:18 am

could you have drawn this in a straight line instead of curved the way it is in the answers?


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