In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called I2/DMSO-catalyzed one-pot approach for the synthesis of 1,3,4-selenadiazoles, published in 2021, which mentions a compound: 21778-81-4, mainly applied to arylaldehyde hydrazide selenium iodine catalyst one pot cascade reaction; diaryl selenadiazole preparation; hetroarylaldehyde hydrazide selenium iodine catalyst one pot cascade reaction; diheteroaryl selenadiazole preparation, Reference of 5-Methoxy-1H-indole-2-carbaldehyde.
A three-component cascade reaction for the synthesis of 1,3,4-selenadiazoles and their derivatives from arylaldehydes, hydrazine, and elemental selenium by using mol. iodine wais reported. This strategy was operationally simple, well-suited to a wide range of functional groups, and provided the desired products in moderate to excellent yields. The proposed mechanism predicted that the reaction tolerated a radical process.
As far as I know, this compound(21778-81-4)Reference of 5-Methoxy-1H-indole-2-carbaldehyde can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem