Catalytic use of organostannyl radical: The reaction of 1,2,3-selenadiazole with olefins in the presence of a catalytic amount of tributyltin hydride

When 1,2,3-selenadiazoles were treated with an excess amount of olefins in the presence of a catalytic amount of Bu3SnH and AIBN, the addition of a vi nyl radical, which was generated in situ by the denitrogenation of 1,2,3-se lenadiazoles, to the carbon-carbon double bond followed by intramolecular c yclization proceeded efficiently to afford the corresponding dihydroselenop henes in moderate to good yields. (C) 1999 Elsevier Science Ltd. All rights reserved.