438210-91-4Relevant academic research and scientific papers
Application of directed metalation in synthesis. Part 4: Expedient synthesis of substituted benzo[b]thiophene and naphthothiophene
Mukherjee, Chandrani,Kamila, Sukanta,De, Asish
, p. 4767 - 4774 (2007/10/03)
A short, simple and inexpensive synthesis of several diversely substituted benzo[b]thiophenes and one naphthothiophene is described. The method involves introduction of methylsulfanyl group ortho- to the amide function of readily available N,N-diethylamides of aryl carboxylic acid by directed metalation. Thioindoxyls, obtained in high yields through side-chain deprotonation and cyclisation in one pot, are reduced to benzo[b]thiophene or napthothiophene.
Application of directed metallation in synthesis, part 2: An expedient synthesis of methoxybenzo[b]thiophenes
Mukherjee, Chandrani,De, Asish
, p. 325 - 327 (2007/10/03)
A short, simple and expedient synthesis of substituted benzo[b]thiophenes involving directed ortho lithiation-side-chain deprotonation-cyclisation-reduction is described. This method is a valuable improvement over earlier syntheses of the same class of compounds, both with respect to the number of steps and overall yields.
