Homework problem 1.21

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Frances Relampagos 1J
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Homework problem 1.21

Postby Frances Relampagos 1J » Wed Mar 02, 2016 12:09 am

I don't understand why the answer is 5-methyl-cyclopenta-1,3-diene. Should it be 3-methyl-cyclopenta-1,4-diene since it has the smallest configuration?

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Re: Homework problem 1.21

Postby Chem_Mod » Wed Mar 02, 2016 9:12 am

When considering alkenes, the double bonds have priority for the lowest numbers. Therefore, we assign the lowest numbers to both the double bonds before assigning a number to the substituent.

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