Efficient Synthesis of Functionalized 2-Carbamoylpyran-4-ones by Ring-Transformation of 5-Alkylidene-2,5-dihydropyrrol-2-ones
作者:Peter Langer、Joachim Anders、Van Nguyen
DOI:10.1055/s-2004-835652
日期:——
Functionalized 2-carbamoylpyran-4-ones were prepared by acid-mediated ring-transformations of readily available 5-alkylidene-3-arylamino-2,5-dihydropyrrol-2-ones.