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![[Post New]](/templates/default/images/icon_minipost_new.gif) 23 Jun 2008 13:58:35 IST
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wat is the product ????
C6H5--O--C6H5 ---HI---------->
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I believe,It matters not whether you win or lose; what matters is whether I win or lose.!!!
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23 Jun 2008 14:55:24 IST
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assumin HI to be in excess i.e at least 2 equivalents
yaar actually there are two ans to this question
if you have C6H5-O-C6H5 WITH HI it depends on the condition in which HI is used.
if you use dil HI it will form C6H5OH+C6H5I
if you use hot conc HI then 2C6H5OH
please correct me if i am wrong or nudge me if you have any doubts
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23 Jun 2008 15:20:29 IST
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Answer shud be C6H5OH + C6H5I. Its an SN2 reaction.
@MUDIT,
How wud u get 2C6H5OH if u use hot conc HI?? We are assuming that only 1 equivalent of HI is used and with 1 equivalent, we will get C6H5OH + C6H5I.
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23 Jun 2008 15:52:39 IST
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ya thnks @tarinbansal
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23 Jun 2008 16:26:30 IST
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"I THINK THE RXN IS NOT FEASIBLE"
benzyl carbocation is high unstable!!!!!!!!!!
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23 Jun 2008 16:39:22 IST
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@akku,
I have posted the mechanism. Tell me where do u find benzyl carbocation in it???? 
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23 Jun 2008 16:43:55 IST
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U have followed SN2 MECHANISM which is not feasible becoz of steric hinderance/Nu has to face a benzene ring so attack from opposite side is not possible
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23 Jun 2008 16:45:44 IST
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in op tondon it is written smwer that phenyl carbocation is not formed bye SN1 mech. n SN2 aatack on carbon of benzene ring doesn't occur .....so ArI cant be formed
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23 Jun 2008 16:47:50 IST
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See, SN1 is not possible at all for sure.
But SN2 is possible atleast to some extent. I am not saying that u r gonna get a 99% yield but still, this mechanism is feasible.
U cant say attack is not possible. Benzene rings are not as bulky as a tertiary carbon. The attack is possible but maybe the yield wud not be too gud.
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28 Jun 2008 19:13:23 IST
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but dont u thnk dat due to resonance there wil be a double bond character b/w o and phenyl ring
hence due to dat it wil be very difficult to cleave the bond
plz correct me if im wrong
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28 Jun 2008 19:51:04 IST
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C6H5OH + C6H5I
i m sure this is the correct answer
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28 Jun 2008 21:54:06 IST
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@ajain6691,
U R right. :D
But u shud keep this thing in mind that O can have resonance with only 1 phenyl ring at a time. SO, the other Ph-O bond can be easily cleaved.
Hope u get it.
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29 Jun 2008 17:49:17 IST
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hey...!!!!!
WE ALWAYS TALK OF RESONANCE HYBRID!! "ONE PHENYL AT A TIME" IS NOT TRUE.....!!
BOTH PHENYL GROUPS ARE ALIKE --JUST CONSIDER THE RESONANCE HYBRID- THE TRUE STATE !
GO TO THE BASICS OF RESONANCE.....THIS ELECTRON SHARING TAKES PLACE AT SUCH A FAST PACE THAT THEY ARE NOT IDENTIFIED......THERE IS DOUBLE BOND CHARACTER AND NO REACTION CAN TAKE PLACE !!
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30 Jun 2008 10:10:41 IST
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Confirmed it from my sir, the answer is- No reaction.
Sorry for the wrong answer above. 
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