Intramolecular hydrogen bonds in 3-diethylaminomethyl-5-R-salicylic aldehydes

Add time:08/01/2019    Source:sciencedirect.com

Two 3-diethylaminomethyl-5-R-salicylic aldehydes were obtained and studied in chloroform solutions by FTIR and NMR spectroscopy. The existence of an equilibrium between the structures with OH⋯OC and N⋯HO intramolecular hydrogen bonds was suggested. In the case of compound 1 (R=OCH3) the OH⋯OC intramolecular hydrogen bond was more favorable whereas in the case of compound 2 (R=Br) the structure with the OH⋯N intramolecular hydrogen bond was predominant.

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