ACTION DES HYDRAZINES SUR LES γ,β'-DICARBONYLPHOSPHONATES ET PHOSPHINEOXIDES: SYNTHESE DE 4-PHOSPHOPYRIDAZINES ET PYRIDAZIN-3-ONES
摘要:
gamma,beta'-Dicarbonylphosphonates and phosphincoxides 1 and 2 react with hydrazines to give 4-phosphopyridazine and pyridazin-3-one derivatives 3, 4 and 5, 4-Phosphodihydro-pyridazin-3-ones 5 were dehydrogenated by the action of bromine in acetic acid to give phosphopyridazinones 6. The structure of all obtained products is confirmed by NMR and IR spectroscopy.
Action DU DIETHYLPHOSPHITE ET DE LA P-ChlorodiphenylPhosphine SUR LES β-acylacrylates ET LES 2-ENE-1,4-Diones: 合成 DE γβ'-CETOESTERPHOSHONATES ET DE 3-(二苯氧基)-二苯基膦