In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Recommanded Product: 141-30-0, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 141-30-0, name is 3,6-Dichloropyridazine. In an article£¬Which mentioned a new discovery about 141-30-0
Organic Azides in Heterocyclic Synthesis, 14. Synthesis of 3,6-Diaminopyridazine from 6-Azidotetrazolo<1,5-b>pyridazine
6-Azidotetrazolo<1,5-b>pyridazine (“3,6-Diazidopyridazine”, 1) reacts at ambient temperature with phosphanes or phosphites 2a – c to yield the phosphazenes 3a – c.In contrast to literature reports, the tetrazolopyridazines 1, and 3a,b react with phosphanes to yield 3,6-bis(phosphoranylideneamino)pyridazines 4; however, the required temperature is rather high (180 deg C).The use of phosphites instead of phosphanes leads to “Michaelis-Arbuzov-type” rearrangements; thus, 3a reacts in boiling 2d to afford 6, and heating of the trimethoxyphosphazene 3c in refluxing 1,2-dichlorobenzene yields the methylamino derivative 7.Key words: Staudinger reaction / Phosphanes / Phosphites / Phosphazenes / Amidophosphonates
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Pyridazine – Wikipedia,
Pyridazine | C4H4N1671 – PubChem