There are many ways to construct benzofuran rings. The most common strategies are dehydration of phenoxyalkanone below acidic issue,104 dehydration of o-hydroxybenzophenone underneath acidic condition,105 decarboxylation of o-acetylphenoxyacetic acid or ester beneath alkaline ailment,106 and cyclization of o-hydroxybenzophenone to construct benzofuran ring.107 These four types are the... https://phenylpiracetampowder39382.imblogs.net/79662653/bemethyl-secrets