Phenylsulfinylselenyl chloride (PhSO2SeCl): a new reagent for the formation of C–Se and N–Se bonds. Generation and in situ Diels–Alder trapping of selenonitrosoarene intermediates (Ar–NSe)
Di(phenylsulfonyl) Diselenide (PhSO2Se)2 and Phenylsulfonylselenyl Chloride (PhSO2SeCl) as New Selenium-Transfer Reagents in the Synthesis of Functionalised Diselenides and Selenides