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2,1,3-Benzoselenodiazole-5-carbaldehyde and derivatives preparations, 13C, 15N and 77Se NMR spectroscopy

Morkved E. H., Bjorlo O., Schilf W., Bernatowicz P.

Bulletin of the Polish Academy of Sciences. Chemistry

2000

Vol. 48, No. 1

47-56

2,l,3-Benzoselenadiazole-5-carbaldehyde 5 has been prepared in 53% overall yield from 5-methyl-2,l,3-benzoselenadiazole 1, by a four-step synthesis. Compounds 1-5 and 2,1,3-benzo-selenadiazole 8 have been analysed by 1H, 13C, 15N and 77Se NMR spectroscopy, and structural implications are discussed. Some imines and diimines were prepared from 5, but low solubility in organic solvents made these compounds of little interest for further studies.