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Topic: Which is most reactive? Which is more acidic  (Read 5164 times)

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Offline orgonovice

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Which is most reactive? Which is more acidic
« on: October 11, 2010, 05:58:56 PM »
I don't understand the first 2 questions on this practice exam. How do I determine if something is more reactive? I can't decide whether or not resononce/activating/deactivating effects are most important in figuring out the fastest reaction or the most reactive species. the file attached has the questions.

Offline Jorriss

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Re: Which is most reactive? Which is more acidic
« Reply #1 on: October 11, 2010, 06:39:36 PM »
Check your textbook. There is likely a section in the Diels-Alder reaction itself and if there is, there will be a portion about how electron withdrawing and donating groups effect the reactivity of the diene and dieneophile.

Although, if you know which - the diene or the dieneophile - is the nucleophile and electrophile you could work it out yourself.



For the second question, an Sn1 requires a carbocation intermediate. Which of those compounds could form the most stable intermediate?

Offline Doc Oc

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Re: Which is most reactive? Which is more acidic
« Reply #2 on: October 11, 2010, 06:47:09 PM »
Coltart?  You're a Blue Devil

Offline orgonovice

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Re: Which is most reactive? Which is more acidic
« Reply #3 on: October 11, 2010, 06:59:24 PM »
lol. yessss. and orgo is killing me!

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