Preparation of 4-hydroxy-3-methoxy-2-nitrobenzaldehyde_Kain Industrial Additive

Background and overview[1] 4-Hydroxy-3-methoxy-2-nitrobenzaldehyde can be used as a pharmaceutical intermediate, which can be prepared through a three-step reaction using vanillin as the starting material. There are reports in the literature that 4-hydroxy-3-methoxy-2-nitrobenzaldehyde can be used to prepare a new type of macrocyclic heterocyclic compound with an 18-19-membered heterocycle as the core that is different…