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From o-Substituted Bromoselenobenzenes to Selenaheterocycles

Potaczek P., Młochowski J.

Polish Journal of Chemistry

2006

Vol. 80, nr 6

913-920

The reactions of two o-substituted bromoselenobenzenes: 2-(bromoseleno)benzene sulfonyl chloride and 1,2-di(bromoseleno)benzene with bisnucleophiles having amino, thiol and active methylene group have been studied. In most cases five membered rings, containing selenium as well as nitrogen and sulfur atoms, such as 1,3,2-benzothiaselenazole, 1,2,3-dithiaselenazole, benzo-1,3(2H)-thiaselenole, 1,3,2-benzodiselenazole and benzo-1,3(2H)-diselenole, were formed. The elaborated procedures have synthetic value.