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#1 Posted 11:19pm 07-12-08 nice Q. try it.Styrene is treated with PBA , then with H2SO4 . two products are fromed . give their structures. this is a bit tricky. do try .
behind every lie there's a truth |
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#2 Posted 11:55pm 07-12-08 Re: nice Q. try it. tukka ............. styrene-acrylic polymer
All men dream but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity; but the dreamers of the day are dangerous men, for they may act their dream with open eyes to make it possible. Edited on 00:10am 08-12-08 |
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#3 Posted 00:15am 08-12-08 Re: nice Q. try it.nope no where near. atleast give me the first product.
behind every lie there's a truth |
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#4 Posted 9:13pm 09-03-10 Re: nice Q. try it.Styrene oxide(epoxide group on double bond's place) and a carboxylic acid byproduct first, and then treated with H[ss]2[/ss]SO[ss]4[/ss] for acidic hydrolysis of epoxide? H[ss]2[/ss]O is a relatively poor nucleophile(kyunki yeh acidic hydrolysis hai, I am assuming a general case of water from hydronium ion instead of HSO[ss]4[/ss][p]-[/p] ion) in comparison to the leaving group O[p]+[/p]H(protonated epoxide). So the rate at which it attacks an epoxide carbon is much slower than the rate at which O[p]+[/p]H endeavours to cleave the C-O bond. This is an S[ss]N[/ss]2 reaction with S[ss]N[/ss]1 characteristics. The major product will be glycol with -OH attached to the carbon having Ph(as the transition state leading to the product can suck electrons from Ph), and the disconnected epoxide oxygen is now an OH at the beta carbon(isliye glycol).
Self belief is such a peculiar thing. As long as you have it, nothing can stop you, you feel invulnerable. But once it's gone, nothing can bring you up from the "I'm-useless" state you end up in. Edited on 9:42pm 09-03-10 |
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