used as ligands (L) in the formation of ML2Cl2 complexes with platinum(II) or palladium(II) metal ions (M). Potassium tetrachloroplatinate(II), used as the metal ion reagent, gave both trans-[Pt(4a)2Cl2] and cis-[Pt(4a)2Cl2], complexes with ligand 4a, and only cis-[Pt(4b)2Cl2] isomer with ligand 4b. Palladiumcomplexes were obtained by the reaction of bis(benzonitrile)dichloropalladium(II) with the
Reaction of dimethyl 2-methyl- and dimethyl 2-phenyl-4-oxo-4H-chromen-3-yl-phosphonate with amines
作者:Budzisz Elż、Pastuszko Slawomir
DOI:10.1016/s0040-4020(99)00153-2
日期:1999.4
The reaction of dimethyl 2-methyl- and dimethyl 2-phenyl-4-oxo-4H-chromen-3-yl-phosphonate with various aliphatic and aromatic amines was investigated. A novel class of cyclic phosphonic analogues of chromone, 1 (2-methoxy-3-[1-(alkylamino)ethylidene or benzylidene]-2,3-dihydro-2,4-dioxo-2λ5-benzo[e]-[1,2]oxaphosphinane), was obtained when primary amines were used as nucleophiles. An analogous reaction