DESULFURIZATION OF 2-THIOURIDINES BY DIPOTASSIUM DIAZENEDICARBOXYLATE

Abstract
The reaction of 5-methoxycarbonylmethyl-2-thiouridine (la) with dipotassium diazenedicarboxylate and with N2H4–H2O2 afforded l-(β-D-ribofuranosyl)-5-methoxycarbonylmethyl-4-(lH)-pyrimidinone (3a) in good yields, suggesting that the reaction involves diimide. On treatment with H2O2, la also gave 3a.