White crystal, industrial product is light yellow crystal, mp63~64℃, easily soluble in most organic solvents.
2-(Tert-butyl)-4,5-dichloro-2,3-dihydropyridazin-3-one is an important intermediate in the synthesis of the acaricide pyridaben.
2-(Tert-butyl)-4,5-dichloro-2,3-dihydropyridazin-3-one is prepared from tert-butylhydrazine and furochloric acid as raw materials.
[1] Patent: WO2011/97649, 2011, A2. Location in patent: Page/Page column 151
[2] Bioorganic and Medicinal Chemistry, 2010, vol. 18, # 3, p. 1312 - 1320