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determine Z or E using NMR
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Topic: determine Z or E using NMR (Read 3876 times)
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HB
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determine Z or E using NMR
«
on:
May 04, 2013, 04:23:00 PM »
how can I determine Z or E configuration of schiff bases using NMR
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orgopete
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Re: determine Z or E using NMR
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Reply #1 on:
May 04, 2013, 09:33:26 PM »
If disubstituted, check the coupling constants. They are quite different.
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HB
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Re: determine Z or E using NMR
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Reply #2 on:
May 05, 2013, 12:58:52 PM »
if the compound is the result of benzaldehyde and p-anisidine reaction, how can I apply that, what is the difference in coupling constants
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Dan
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Re: determine Z or E using NMR
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Reply #3 on:
May 05, 2013, 06:10:08 PM »
You cannot compare coupling constants for N-benzylideneanisidine - the imine H does not couple to anything. You need to look at through space interactions rather than through bond. Look up the nuclear Overhauser effect.
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determine Z or E using NMR