83267-90-7Relevant academic research and scientific papers
1-Methyl-4-ferrocenylmethyl-3,5-diphenylpyrazole: A versatile ligand for palladium(II) and platinum(II)
Basu, Pradipta Kumar,González, Asensio,López, Concepción,Font-Bardía, Mercè,Calvet, Teresa
, p. 3633 - 3642 (2010/01/11)
The syntheses and characterization of two novel ferrocene derivatives containing 3,5-diphenylpyrazole units of general formula [1-R-3,5-Ph2-(C3N2)-CH2-Fc] {Fc = (η5-C5H5)Fe(ηsup
α-ferrocenylalkylation of 1,5-disubstituted tetrazoles and certain transformations of reaction products
Krasnikova,Moskalenko,Kopaeva,Boev
, p. 1468 - 1475 (2007/10/03)
The reaction of α-hydroxyferrocenylalkyl derivatives and vinylferrocene with 1,5-disubstituted tetrazoles in methylene chloride-aqueous acid HX (X = BF4, ClO4) two-phase systems gives a mixture of 1,3,5- and 1,4,5-trisubstituted tetrazolium salts, the fraction of the 1,3,5-isomers prevailing. The synthesized salts are readily dealkylated under the action of bases to give the above starting compounds. Heating of 3(4)-(ferrocenylmethylene)-1,5-pentamethylenetetrazolium and 3(4)-(ferrocenylmethylene)-2-methyl-1-phenyltetrazolium tetrafluoroborates in anhydrous methanol or ethanol in the presence of catalytic amounts of alkali gives rise to ferrocenylcarbinol ethers. Other nuclephiles (pyridine, triphenylphosphine, sodium thiocyanate, sodium p-toluenesulfinate, dibenzoylmethane) also react with the above tetrazolium salts, forming ferrocenylmethylation products. Heating of equimolar amounts of 3(4)-(ferrocenylmethylene)-1,5-pentamethylenetetrazolium or 3(4)- (ferrocenylmethylene)-2-methyl-1-phenyltetrazolium perchlorates with mercury(II) perchlorates in anhydrous ethanol results in mercuration of the starting tetrazolium salts, involving hydrogen substitution in the methylene or methyl groups bound to tetrazolium carbon atoms. The condensation of the same salts with p-N,N-(dimethylamino)nitrosobenzene, leading to azomethine formation, occurs under similar conditions.
Ferrocenyl salts as synthons: new ferrocenyl-1,3-diketones
Zakaria, Choudhury M.,Morrison, Colin A.,McAndrew, Douglas,Bell, William,Glidewell, Christopher
, p. 201 - 208 (2007/10/02)
Reaction of (ferrocenylmethyl)trimethylammonium iodide with the mono-sodium salts of a range of acyclic 1,3-diketones leads smoothly to 2-(ferrocenylmethyl)-1,3-diketones CH(COR1)(COR2), but with the corresponding tetrabutylammonium salts deacylation occurs.With the sodium salt of cyclohexane-1,3-dione, disubstitution occurs to give (2,6-dioxocyclohexane-1,1-diyl)bismethyleneferrocene, 2C.The lithium salt of acetylferrocene reacts with a range of monocarboxylic esters to provide 1-ferrocenyl-1,3-diketones COCH2COR, but simple esters of dicarboxylic acids either do not react, or undergo only monosubstitution. Keywords: Ferrocene; Diketones; Iron
REACTION OF Cα-Cβ-CLEAVAGE IN THE SERIES OF MONOSUBSTITUTED β-DICARBONYL COMPOUNDS
Postnov, V. N.,Polivin, Yu. N.,Sazonova, V. A.,Grukhanova, S. N.
, p. 197 - 200 (2007/10/02)
Interaction of PhMgBr with α-monosubstituted β-dicarbonyl compounds, β-diketones, β-ketonic esters and β-diesters, is studied.A new reaction route, Cα-Cβ-cleavage, the course of which is determined by the pKR+ value of the α-substituent and the pKa value of the corresponding proton analog of the β-substituent is found.
