How is 1H-Indazol-3-ol (CAS: 7364-25-2) typically synthesized?

1H-Indazol-3-ol can be synthesized via the condensation of indole-3-carbaldehyde with hydrazine, followed by hydrolysis. A more common route involves the reaction of indole-3-carboxaldehyde with ammonia to form indazole-3-carboxamide, which is then hydrolyzed to yield 1H-Indazol-3-ol. Detailed procedures often use mild base conditions to promote the condensation and hydrolysis steps.