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Topic: Detailed Help 1 - Nucleophilic Addition  (Read 1155 times)

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Offline BloodCrisis

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Detailed Help 1 - Nucleophilic Addition
« on: February 14, 2013, 05:22:35 PM »
This is one of the three excercises I need to answer. Please if somebody can help me; Karma will bless you (Or may be universe eqilibrium o whatever yo call it xP)


Offline orgopete

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Re: Detailed Help 1 - Nucleophilic Addition
« Reply #1 on: February 14, 2013, 05:42:26 PM »
Which is a better electron donor, CH3 or H?
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Offline Borek

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Re: Detailed Help 1 - Nucleophilic Addition
« Reply #2 on: February 14, 2013, 05:57:16 PM »
You have to show your attempts at solving the question to receive help. This is a forum policy.
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Offline BloodCrisis

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Re: Detailed Help 1 - Nucleophilic Addition
« Reply #3 on: February 14, 2013, 06:55:17 PM »
Sorry Borek, I didn't know that. Now I do.

"orgopete"...Ch3 groups have an I+ effect, better than H. Ch3 will reduce the (+) local electron density of the C of de carbonilyc group makin' it less reactive to an NA.

Alifatic groups have an I- effect but a more powerful M+ effect by resonance.
So...
the problem is that... I know that "c" is more reactive than "a". but i don't know if resonance effect is strong enough to surpass those methilic groups on... my guess is

(reactivity)

b<a<c

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