Environmentally benign process for the synthesis of 2,3-disubstituted benzo[b]thiophenes using electrophilic cyclization

Article abstract of DOI:10.1016/j.tetlet.2013.05.139

We have developed a greener process for the synthesis of 2,3-disubstituted benzo[b]thiophenes using electrophilic cyclization as a key step. Our method not only employs an environmentally friendly solvent ethanol, but also utilizes safe and inexpensive in