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Topic: Et2N-Si-NEt2((OR)2), Is this possible?  (Read 4178 times)

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Offline craken66

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Et2N-Si-NEt2((OR)2), Is this possible?
« on: April 30, 2008, 10:19:17 PM »
Hello, I have some problems...

Si has reactable four site like Carbon.

So, I made following one.

            OR
            |
    Et2N-Si-NEt2
            |
            OR

And, I want to obtain

            OR
            |
      RO-Si-OR
            |
            OR

By using following reaction,

            OR
            |
    Et2N-Si-NEt2  +  2 K(+)(-)OR  ---->
            |
            OR

I want to metion whether this is possible or not.

Thank you for your reading~~





Offline agrobert

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Re: Et2N-Si-NEt2((OR)2), Is this possible?
« Reply #1 on: April 30, 2008, 11:05:55 PM »
References?  Or is this an idea?
In the realm of scientific observation, luck is only granted to those who are prepared. -Louis Pasteur

Offline movies

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Re: Et2N-Si-NEt2((OR)2), Is this possible?
« Reply #2 on: April 30, 2008, 11:35:21 PM »
Based on pKa's, this would not be favorable.  You are essentially trading an alkoxide for an amide.  The pKa's for the conjugate acids would be ~17 and ~33, respectively.

Offline DrCMS

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Re: Et2N-Si-NEt2((OR)2), Is this possible?
« Reply #3 on: May 03, 2008, 04:49:25 AM »
Based on pKa's, this would not be favorable.  You are essentially trading an alkoxide for an amide.  The pKa's for the conjugate acids would be ~17 and ~33, respectively.

There speaks an organic chemist not a silicon chemist.  Silicon is similar to carbon but different enough to favour different reaction pathways.

Si-O bonds are the second strongest covalent bond, only Si-F is stronger, so Si-O bonds are almost always favoured.

What is the R group?  How did you make the first compound?

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