THE SINGLE BEST STRATEGY TO USE FOR NSI 189

There are numerous ways to assemble benzofuran rings. The commonest strategies are dehydration of phenoxyalkanone beneath acidic condition,104 dehydration of o-hydroxybenzophenone below acidic issue,105 decarboxylation of o-acetylphenoxyacetic acid or ester underneath alkaline affliction,106 and cyclization of o-hydroxybenzophenone to assemble benz