Structure analysis of some α‐(n‐methyl‐n‐formylaminomethyl)‐quinolines |
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Authors: | Andrzej Malankiewicz Ewa Michalik Andrzej Kowalski |
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Institution: | Andrzej Maślankiewicz,Ewa Michalik,Andrzej Kowalski |
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Abstract: | The 1H and 13C nmr spectra of the rotational isomers 3a and 3b of 6‐N‐methyl‐N‐formylaminomefhyl)‐thioquinanthrene were completely assigned with a combination of 1D and 2D nmr techniques. The key‐parts of this methodology were long‐range proton‐carbon correlations and NOE experiments with N‐methyl‐N‐formylaminomethyl substituent. The X‐ray study of 4‐methyl‐2‐N‐methyl‐N‐formylaminomethyl)quinoline 4a as well as 1H and 13C nmr spectra show that N‐methyl‐N‐formylaminomethyl substituent in 4a and 4b has a different steric arrangement than the same substituent in 3a and 3b . |
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