Chemical Forums

Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: Molly71 on January 05, 2013, 06:06:33 AM

Title: different structures for the following reactions
Post by: Molly71 on January 05, 2013, 06:06:33 AM

suggest structures for the following A,B,C,D :
(question is attached)

thanks (:

Title: Re: different structures for the following reactions
Post by: sjb on January 05, 2013, 06:25:27 AM

http://www.chemicalforums.com/index.php?topic=57.0 - Forum rules require that you try and give some thought to your question before posting. Do you recognise any of the reagents and what they may do?

Title: Re: different structures for the following reactions
Post by: Molly71 on January 05, 2013, 07:01:59 AM

Oh im sorry!
I thinks ive managed A and B, Im really not sure though..
I find the subject very difficult, so I need a bit of help and explenation..  :-\

Title: Re: different structures for the following reactions
Post by: discodermolide on January 05, 2013, 07:27:45 AM

Have a look here http://en.wikipedia.org/wiki/Williamson_ether_synthesis (http://en.wikipedia.org/wiki/Williamson_ether_synthesis) and see if you can relate it to your problem.

Title: Re: different structures for the following reactions
Post by: Molly71 on January 05, 2013, 09:12:56 AM

it helps a bit I guess.. but there is still too much that i dont understand..
can't figure out this problem..Im quite new in the chemistry buisness..  :-\  ::)

Title: Re: different structures for the following reactions
Post by: discodermolide on January 05, 2013, 10:17:57 AM

Why can't you apply what's on that link to your problem.
Hint: what is the reaction of sodium metal with alcohols?

Title: Re: different structures for the following reactions
Post by: Babcock_Hall on January 05, 2013, 11:05:05 AM

Na seems like an odd choice (although it should work).  Are you sure that you copied down the problem correctly?

Title: Re: different structures for the following reactions
Post by: Molly71 on January 05, 2013, 12:15:00 PM

Ok! I think I've managed C as well! thanks alot! (;

I still don't have D.. im thinking ch3 will bond and I is a leaving group?..

And I'm sure I coppied the question correctly! it's Na for sure  ::)

Title: Re: different structures for the following reactions
Post by: Babcock_Hall on January 05, 2013, 12:24:12 PM

Iodide ion is a great leaving group, so you seem to be on safe ground there.  What do you propose as the nucleophile?

Title: Re: different structures for the following reactions
Post by: Molly71 on January 05, 2013, 12:30:49 PM

mmm maybe I got it wrong then.. C is not the nucleophile?

Title: Re: different structures for the following reactions
Post by: Babcock_Hall on January 05, 2013, 03:30:15 PM

The carbon atom of CH₃I is a plausible electrophilic center.  Nucleophiles need at least one lone pair of electrons.

Title: Re: different structures for the following reactions
Post by: discodermolide on January 05, 2013, 04:54:33 PM

Quote from: Molly71 on January 05, 2013, 12:30:49 PM

mmm maybe I got it wrong then.. C is not the nucleophile?

Have another look at the link I posted and see if you can determine what the nucleophile is.
It shows you in the first reaction.

Title: Re: different structures for the following reactions
Post by: Molly71 on January 06, 2013, 12:04:48 PM

Yap! I think I got it now (:
Thanks alot everybody!