Publication: Selenium-containing heterocycles from isoselenocyanates:5-methylselenazole derivatives from the reaction with malononitrile and propargyl chloride
Selenium-containing heterocycles from isoselenocyanates:5-methylselenazole derivatives from the reaction with malononitrile and propargyl chloride
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Sommen, G. L., Linden, A., & Heimgartner, H. (2008). Selenium-containing heterocycles from isoselenocyanates:5-methylselenazole derivatives from the reaction with malononitrile and propargyl chloride. Helvetica Chimica Acta, 91, 209–219. https://doi.org/10.1002/hlca.200890025
Abstract
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Aryl isoselenocyanates 1 react with malononitrile (6a) and propargylchloride (8) in DMF in the presence of Et3N to give the corresponding 2-(3-aryl-2,3-dihydro-4-methyl-1,3-selenazol-2-ylidene)malononitriles 12 as major products. The analogous reaction takes place with benzoylacetonitrile (6b) instead of 6a. In some cases, the corresponding non-cyclic 2-[(arylamino)(prop-2-ynylselanyl)methylidene]malononitriles 9 were obtained as minor products. The structures of 9e and 11a have been established by X-ray crystallography.
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- Sommen, G L
- Heimgartner, H
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Sommen, G. L., Linden, A., & Heimgartner, H. (2008). Selenium-containing heterocycles from isoselenocyanates:5-methylselenazole derivatives from the reaction with malononitrile and propargyl chloride. Helvetica Chimica Acta, 91, 209–219. https://doi.org/10.1002/hlca.200890025
