Error in Destroyer??

[Allenzyme]

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So.. Dr. Romano wants to know how many constitutional and stereoisomers exist for 1,2-dimethylcyclopentane. Correct answer is 8. Am I dumb or did he not consider all of the constitutional isomers? I approached this by finding the IHD, then began drawing out the constitutional isomers.. found 8. But that doesn't include stereoisomers at all so.... Awks.

 

[hl4jn]

What question # is it? Is it from the destroyer book with OC/GC/Bio/Math?

Anywhos, if he didn't specifically write "consider all stereoisomers" I don't think you need to worry about it. For questions consider stereoisomers, he specifically says that.

 

[Allenzyme]

It's number 48... specifies to consider all stereoisomers. I believe he did consider all the stereoisomers for the constitutional isomers he drew... though I don't believe he drew all possible constitutional isomers (which he also specified).

 

[Dotoday]

The answer is core ct. You can have 1,1 dim ethyl, 1,2 dimethyl and 1,3 dimethyl. Now, come stereoisomers. Cis or trans R or S. Please beware of meal compounds. Thus total of 8. Hope this helps.

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[Allenzyme]

What about... heptene... or ethylcyclopentane... are those not constitutional isomers as well...?