physics chemistry maths science forums
become expert I help I sign up I login
refer a friend - earn nickels!!   
 advanced
 
Home
Ask & Discuss Questions
Study Material
Experts Zone
Hang Out!

Ask & Discuss Questions with Community & Experts

 Moderation Team
 90 chars left    advanced
Ask iit jee aieee pet cbse icse state board community Community Discussion Question: OCH3 is it withdrawing or donating?
Forum Index -> Organic Chemistry like the article? email it to a friend.  
Author Message
[Post New]30 Mar 2008 20:25:27 IST
    Subject: OCH3 is it withdrawing or donating?
[Up] View Post
Euphorio (12)

Cool goIITian

Olaaa!! Perrrfect answer. 2  [3 rates]
Euphorio's Avatar
total posts: 44    
offline Offline
my coching teacher says its donating but in many books it is withdrawing
caus -I effect but i think it is donating while it shows R-effect...to what shud i giv priority?
please rate me!!!!!!!!!!!!!!!!!!!!!!!!!!! no one does!!!!!!!!!!
    
[Post New]30 Mar 2008 20:28:09 IST
    Subject: Re:OCH3 is it withdrawing or donating?
[Up] View Post
Ronaldooo (44)

Blazing goIITian

Olaaa!! Perrrfect answer. 4  [16 rates]
Ronaldooo's Avatar
total posts: 377    
offline Offline
-O has a lone pair which will resonate...thus it shows +R effect .But it also -I effect but not comparable to the +R effect.Hope u got it...
Please watch the BPL match between ManUtd and Arsenal on Sunday at 5:55pm and support only ManUtd...for BPL lovers,update:ManUtd-2 Arsenal-1...
Viva Ronaldoooo
Viva Ronaldoooo
Viva Ronaldoooo
Running down the wing,
Hear United sing,
Viva Ronaldoooo.
-United supporters new chant!!!
Team Plyd Pts
United 32 76
Cls 32 71
Arse 32 70
Who are Liverpool?????
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[Post New]30 Mar 2008 20:33:12 IST
    Subject: OCH3 is it withdrawing or donating?
[Up] View Post
neeraj_agarwal_1990 (914)

Blazing goIITian

Olaaa!! Perrrfect answer. 140  [247 rates]
neeraj_agarwal_1990's Avatar
total posts: 2038    
offline Offline
u have to have ur basics right...

please carefully understand the difference b/w R and I effects....
 this reply: 5 points  (with 1 Olaaa!! Perrrfect answer.   in 1 votes )   [?]
 
You have to be logged on to rate
  
[Post New]30 Mar 2008 20:56:18 IST
    Subject: Re:OCH3 is it withdrawing or donating?
[Up] View Post
sandeepramesh (1245)

Blazing goIITian

Olaaa!! Perrrfect answer. 201  [321 rates]
sandeepramesh's Avatar
total posts: 1179    
offline Offline
In reality +R effect dominates but -I effect is used to determine the more likely position of subsn i.e. para
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
 
Forum Index -> Organic Chemistry
Go to:   

Top Offers for goIITians
Correspondence Courses
Brilliant Tutorials
Narayana Institute
Aakash Institute
Classroom/Crash Courses
Narayana - Kota , Delhi , Others
Brilliant Tutorials - Class , Crash
Aakash Institute - Medical , Engg
Online Test Series
Brilliant Tutorials
Narayana Institute
Aakash Institute
Mahesh Tutorials
AMITY      Sri Chaitanya