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Textbook problem - chain structure with cis and trans

Posted: Wed Mar 09, 2016 4:44 pm
by Sandeep Gurram 2E
For the example on page 17 of the organic chemistry textbook, why is (E)-3,7-Dimethylocta-1,3,7-triene trans and not cis? Doesn't the atom group attached the double bonds indicate that this is a cis stricture?

Re: Textbook problem - chain structure with cis and trans

Posted: Wed Mar 09, 2016 4:47 pm
by Srivinay_Irrinki
For this question look at the two substituents that are coming off the respective carbon-carbon double bonds, one is pointing up while the other is pointing down, meaning the substituents are on opposite sides of the double bonds indicating trans.