Reformatsky Reaction on Aroylketene<i>S</i>,<i>N</i>-Acetals: A Facile Route to 4-Amino-6-aryl-2<i>H</i>-pyran-2-ones
作者:A. Datta、H. Ila、H. Junjappa
DOI:10.1055/s-1988-27533
日期:——
The aroylketene S,N-acetals 1a-j are shown to undergo regioselective conjugate 1,4-addition with Reformatsky reagent derived from ethyl bromoacetate, followed by cyclization to give novel 4-amino-6-aryl-2H-pyran-2-ones 3a-j in good yields.