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Grade 11Organic Chemistry

What will you name this compound in IUPAC system ? The reason for this question is tht priority rule says that double bond is preffered over triple bond and they are also treated as functional groups. But there is also given that when number of multiple bonds is equal , then length of chain is considered

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Profile image of Avinash Thakur
11 Years agoGrade 11
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3 Answers

Profile image of Yash Jain
ApprovedApproved Tutor Answer11 Years ago
My answer for this question would be 3-(1-Propyne)Hept-1,6-diene
The reason for that is, the terminal double bonds are always given priority over the terminal triple bonds. Consider that. Please correct me if I am wrong somewhere.
Profile image of Avinash Thakur
11 Years ago
Hello Yash Jain, actually that’s the confusion. According to rules I know , we select parent chain with most multiple and if it is same for 2 chains , then we choose one which is longest. Moreover, I got its name “5-ethenyloct-1-en-7-yne” on ACD labs software and “5-Vinyl-1-octen-7-yne” on Chemdoodle website
Profile image of Avinash Thakur
11 Years ago
Hello Yash Jain, actually that’s the confusion. According to rules I know , we select parent chain with most multiple and if it is same for 2 chains , then we choose one which is longest. Moreover, I got its name “5-ethenyloct-1-en-7-yne” on ACD labs software and “5-Vinyl-1-octen-7-yne” on Chemdoodle website