ν-Triazolines. Part 42. Study on the reactivity of 4,5-dihydro-1-(6-methyl-2-oxo-2H-pyran-4-yl)-5-morpholino-ν-triazoles. Synthetic approach to pyrano[4,3-b]pyrrol-4(1H)-ones
作者:Emanuela Erba、Donato Pocar、Pasqualina Trimarco
DOI:10.1039/b008531f
日期:——
Pyrolysis of 4-aryl-5-morpholino-4,5-dihydrotriazoles 3 affords two products: pyrano[4,3-b]pyrrol-4(1H)-ones 4 and arylacetamidines 5. The reaction mechanism of this transformation is discussed and reaction conditions optimized to enhance the formation of pyrrole-fused pyran-2-one derivatives 4. 2-Aminoaziridines are considered to be key intermediates in this transformation.
4-芳基-5-吗啉代-4,5-二氢三唑 3 的热解得到两种产物:吡喃并[4,3-b]吡咯-4(1H)-酮 4 和芳基乙脒 5。讨论了该转化的反应机理并优化反应条件以增强吡咯稠合吡喃-2-酮衍生物4的形成。2-氨基氮丙啶被认为是该转化中的关键中间体。