University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 3 1995 08 01 SELENIUM HETEROCYCLE XL II [1]. SYNTHESES OF SUBSTITUTED THIAZOLO, SELENAZOLO AND 1,2,3-SELENADIAZOLOINDOLES - 31339 EN Journal Article Reaction of compound 1 with thiobenzarnide or substituted selenobenzamides afforded substituted pyrrolobenzothiazole or selenazoles (2) respectively. Selenium dioxide oxidation of the semicarbazone 4 with selenium dioxide gave 6- benzenesulfonyl- 4,5-dihydro-pynolo [3,2-el benzoselenadiazole (5). https://jsciences.ut.ac.ir/article_31339_c8ee0c6255707903688cf23566daba69.pdf