March 28, 2024, 03:32:57 PM
Forum Rules: Read This Before Posting


Topic: Detailed Help 1 - Nucleophilic Addition  (Read 1820 times)

0 Members and 1 Guest are viewing this topic.

Offline BloodCrisis

  • Regular Member
  • ***
  • Posts: 27
  • Mole Snacks: +0/-0
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

  • Chemist
  • Sr. Member
  • *
  • Posts: 2636
  • Mole Snacks: +213/-71
    • Curved Arrow Press
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?
Author of a multi-tiered example based workbook for learning organic chemistry mechanisms.

Online Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27634
  • Mole Snacks: +1799/-410
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
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.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline BloodCrisis

  • Regular Member
  • ***
  • Posts: 27
  • Mole Snacks: +0/-0
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

Sponsored Links