ORGLIST: Re: Everybody Digest, Vol 12, Issue 15

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From: Nandan Vakatkar (nandan2000$##$yahoo.com)
Date: Fri Sep 23 2005 - 22:27:41 EDT


Rebecca,

 

The answer to your query is very easy.Nitration reaction is an electrophilic reaction i.e. for nitration to take place, there has to be presence of an electron rich site in the molecule. After mono nitration of benzene, the electron density decreases considerably in the benzene ring. Hence, to promote dinitration, you have to increase the temperature.

Do let me know if your require anymore explanation.

Regards.

 

Nandan V. Vakatkar.

Research Fellow

Dyestuff Division

MUICT, Mumbai, India.

e-mail: nandan2000$##$yahoo.com

Mobile: ++91-9821278257

 

Message: 3
Date: Fri, 23 Sep 2005 14:29:07 +0000
From: "Rebecca Holder"
Subject: ORGLIST: increased temp for dinitration
To: everybody$##$orglist.net
Message-ID:
Content-Type: text/plain; format=flowed

Hi everybody!!

I was wondering why, if mononitration is able to take place at room temp,
why dinitration only takes place at increased temperatures. Does anybody
know? I noticed someone else asked this same question a couple of years
ago, but I couldn't find the answer anywhere.

Thanks!

Rebecca




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End of Everybody Digest, Vol 12, Issue 15
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Nandan V. Vakatkar
Mumbai-400054
Tel:++91-9821278257
                
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