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Conformational studies by nuclear magnetic resonance?VI: C?C and C?N rotation barriers in various enamine derivatives |
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| Authors: | Janusz Dabrowski Lech Kozerski |
| Abstract: | Delocalisation of the nitrogen lone electron pair by an acyl and acylvinylogue group simultaneously, results in a lowering of both C? N rotational barriers. MeC(O)CBr?CHNMe2 and MeC(O)C(OCOMe)?CHNMe2 exhibit restricted rotation around what is formally a double bond C?C. |
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