Conformational analyses of N-acylated bicyclic pyridazine derivatives 1a, 1b and 2 were carried out by semiempirical AM1 calculations and temperature dependent 1H-NMR measurements. Energy barriers of rotation around the amide bonds in these compounds are in the same ranges, and absolute differences between calculated and measured values are acceptable. Some ring conformations obtained by calculations are also shown.
|Number of pages||10|
|Journal||ACH - Models in Chemistry|
|Publication status||Published - Dec 1 1998|
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