Electric Literature of 538-58-9, Chemistry is a science major with cience and engineering. The main research directions are chemical synthesis, new energy materials, nano-ceramics, nano-hybrid composite materials, preparation and modification of special coatings. 538-58-9, Name is 1,5-Diphenylpenta-1,4-dien-3-one,introducing its new discovery.
Two synthetic methods leading to the new gamma,gamma?-diphosphonylketones 2 and 2? are reported. The first method involves the base-catalyzed addition of diethylphosphite to diarylideneketones. The second one utilizes the reaction of triethylphosphite and ethoxydiphenylphosphine with beta,beta?-bis(dimethylamino)ketone hydrochlorides. On reaction with phenylhydrazine hydrochloride, compounds 2 and 2? give the corresponding 2-(phosphonoethyl)3-(phosphonomethyl)indoles 3. The structure of all obtained products is confirmed by NMR (1H, 31p, 13C) and IR spectroscopy.
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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate