A Two-Step Synthesis of Hexahydropyrrolo-[1,2-d][1,2,4]triazine-1,4-dione and Related Compounds
摘要:
Reaction of tert-butyl 1-hydrazinecarboxylate with triphosgene and ethyl 2-pyrrolidinecarboxylate or related compounds, followed by the removal of the Boc-protecting group with gaseous hydrogen chloride in anhydrous acetic acid, yields hexahydropyrrolo [1,2-d][1,2,4]triazine-1,4-dione and related heterocycles.