22. Organic Chemistry
Naming Alkenes
Alright, guys, we're gonna take you to the next practice question that dealt with naming Al Keane's. So here we have to name the following Al King compound. So remember, we wanna look for the longest carbon chain. So here, hopefully you were able to find the longest carbon chain. You could say that the longest carbon chain was this chain here. You could have also gone the opposite way where you did this and gave you the longest carbon chain. That would have also been acceptable answer. So now, actually go back. So we'd say here now that this year you would be our longest carbon chain. And now our double bond is right here. You want to count from the end closest to the double bond? So in go. 1234 We get to the carbon with the double bond. Or we could go 123 and get to the carbon with the double bond. We're gonna go the second way because we get there faster. Four, 56 and seven. We're gonna say the double bond starts on carbon number three. So it's three happy teen, and then we have methyl groups on carbons five and two that didn't get number. So they're not part of the longest chain, so they would be to five dime Ethel hyphen three hap teen. So that would be the name. Remember the ending changes from Ain't Teen, because now we're dealing with the double bond, and the three just means carbon number three is the first carbon with a double bond starts. Now that we've seen this attempt to answer the next question again, this is similar to ones that we've done before without canes. Start with the end of the name, draw that as the skeleton and then place everything where you need to and what is to have team mean in terms of the structure of the compound, knowing that is key to answering this question. So attempt this on your own and come back and take a look at my example
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