There are numerous ways to build benzofuran rings. The most typical solutions are dehydration of phenoxyalkanone underneath acidic condition,104 dehydration of o-hydroxybenzophenone below acidic ailment,105 decarboxylation of o-acetylphenoxyacetic acid or ester less than alkaline affliction,106 and cyclization of o-hydroxybenzophenone to construct … Read More