Application of Directed Metallation in Synthesis, Part 2: An Expedient Synthesis of Methoxybenzo[b]thiophenes
作者:Chandrani Mukherjee、Asish De
DOI:10.1055/s-2002-19752
日期:——
A short, simple and expedient synthesis of substituted benzo[b]thiophenes involvingdirected ortho lithiation-side-chain deprotonation-cyclisation-reduction is described. This method is a valuable improvement over earliersyntheses of the same class of compounds, both with respect to the number of steps and overall yields.