- One-Pot Four-Component Assembling for Selenoureas
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An efficient and practical method for the straightforward construction of unsymmetrical selenoureas and cycloselenoureas via the combination of selenium powder, chloroform, and two different amines was comprehensively achieved in one-pot with only the assistance of a base under mild conditions. Thirty-three new structures of unsymmetrical selenoureas including three chiral examples and eight cycloselenoureas were achieved. 1,1-Dimethyl-3-phenylselenourea II, which shows good fungicidal activity, was practically synthesized through this protocol in gram-scale. Isoselenocyanate was further confirmed as a key intermediate by control experiment.
- Li, Lai,Wu, Jiaqi,Wei, Linsha,Lu, Jianmei,Jiang, Xuefeng
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p. 446 - 454
(2020/12/23)
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- SYNTHESIS AND VIBRATIONAL PROPERTIES OF SOME BENZAZOLE-2-SELENONES. A COMPARISON WITH THE CORRESPONDING AZOLIDINE DERIVATIVES
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Several benzazole-2-selenone compounds have been prepared and the syntheses are discussed together with those of the corresponding azolidine-2-selenones.The comparisons of the infrared spectra of each selenonic compound with the thionic isologue differ in the low frequency region, while they are very similar in the fingerprint region.This similarity can be used as a diagnostic aid in confirming the analogy in structure between sulphur and selenium compounds.
- Cristiani, Franco,Devillanova, Francesco A.,Diaz, Angelo,Verani, Gaetano
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p. 231 - 240
(2007/10/02)
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