Electrochemical dehydrogenative cyclization of 1,3-dicarbonyl compounds
作者:Zheng-Jian Wu、Shi-Rui Li、Hao Long、Hai-Chao Xu
DOI:10.1039/c8cc02472c
日期:——
The intramolecular C(sp3)–H/C(sp2)–H cross-coupling of 1,3-dicarbonyl compounds has been achieved through Cp2Fe-catalyzed electrochemical oxidation. The key to the success of these dehydrogenative cyclization reactions is the selective activation of the acidic α-C–H bond of the 1,3-dicarbonyl moiety to generate a carbon-centered radical.
Manganese(III) acetate initiated oxidative free radical reaction between 1,4-naphthoquinones and α-alkylmalonates
作者:Che-Ping Chuang、Sheow-Fong Wang
DOI:10.1016/s0040-4020(98)00622-x
日期:1998.8
The manganese(III) initiatedoxidativefreeradicalreactionbetween 1,4-naphthoquinones and α-alkylmalonates is described. Benzo[a]anthraquinones, benzo[f]indole-4,9-diones and naphtho[2,3-b] furan-4,9-diones can be prepared effectively from readily available 1,4-naphthoquinones and α-alkylmalonates.
Platinum(II) complexes of functionalized malonato ligands: unequivocal synthesis, interaction with a tetradeoxyribonucleotide and deoxyribonucleic acid
作者:Jean-Pierre Laurent、Bernard Morvan
DOI:10.1039/dt9930002141
日期:——
The unequivocal syntheses of four cis-[PtL2(O2C)2CH(CH2)nCO2H}] complexes [L2 = (NH3)2 or trans-cyclohexane-1,2-diamine, n = 1 or 4] has been achieved, avoiding any interaction between the pendant carboxyl group and the platinum. The complexes have been characterized by elemental analysis, C-13 NMR and FAB mass spectroscopy. Their interaction with a tetradeoxyribonucleotide d(T-G-G-T) (G = guanosine, T = ribosylthymine) and DNA (in vitro) has been investigated to show that they form adducts of the type [PtL2(GpG)-N7,N7'}] as do the known therapeutically active platinum complexes. However the presence of the free carboxyl function increases significantly the reactivity with respect to that of the related non-functionalized malonato complexes [PtL2H2C(CO2)2}].
Highly stereoselective radical addition to a trisubstituted alkene by low temperature photolysis of thiohydroxamic esters
作者:Daniel M Scott、Andrew T McPhail、Ned A Porter
DOI:10.1016/s0040-4039(00)88852-8
日期:1990.1
SCOTT, DANIEL M.;MCPHAIL, ANDREW T.;PORTER, NED A., TETRAHEDRON LETT., 31,(1990) N2, C. 1679-1682
作者:SCOTT, DANIEL M.、MCPHAIL, ANDREW T.、PORTER, NED A.