Efficient Two-Step Synthesis of Salicylaldehydes via Directed <i>ortho</i>-Lithiation of in situ N-Silylated <i>O</i>-Aryl <i>N</i>-Isopropylcarbamates
作者:Dieter Hoppe、Matthias Kauch
DOI:10.1055/s-2006-926461
日期:2006.5
O-Aryl N-isopropylcarbamates, conveniently prepared from phenols and isopropyl isocyanate, are subjected to an efficient ortho-lithiation protocol to afford the corresponding salicylaldehydes in a one-pot operation in high yields.