1196-29-8Relevant articles and documents
A novel heterometallic 3d-4f complex with an unusual [MnIV 4Nd4O4] core topology
Hallier, Kirstin,Holynska, Malgorzata,Dehnen, Stefanie
, p. 2093 - 2095 (2011)
The complex [Mn4Nd4O4(Me-sao) 6(NO3)4(OMe)4(MeOH)2] (1) with an unprecedented [MnIV4Nd4O4] core topology was synthesized from MnCl2, Nd(NO3) 3 and Me-saoH2 in methanol at basic conditions (Me-saoH2 = 2′-hydroxyacetophenoxime). In 1 MnIV and NdIII ions are bridged by oxido and methoxido ligands to form an unusual topology including two distorted tetrahedral [Nd2Mn 2(μ4-O)] units. 1 crystallizes in the monoclinic space group P21/c with Z = 2 and lattice constants (at 100 K) a = 14.142(4), b = 19.365(5), c = 14.637(4) A, β = 90.32(3)°. Copyright
Moessbauer and electronic spectral studies of iron(III) complexes of oximes.
Chandra, Sulekh,Sangeetika,Sharma, Sunil Dutta
, p. 755 - 760 (2003)
The hydroxo-bridge complexes of the type [Fe(2)(ligand-H)(4)(OH)(2)] with bidentate nitrogen-oxygen donor ligands, viz. 2-hydroxynaphthaldehydeoxime [hnoH(2)], 2-hydroxyacetphenoneoxime [haoH(2)], salicylaldooxime [SalH(2)], 2-hydroxypropiophenoneoxime [hnoH(2)] have been prepared. All the complexes have been characterized by elemental analysis, magnetic moments, electronic and Moessbauer spectral studies. Moessbauer parameters of the complexes clearly suggest high spin configuration of Fe(III) showing lower magnetic moment to that of the spin only value, i.e. 5.92 BM. It may be due to the antiferromagnetic interaction between Fe(III) centers.
Fe(NO3)3·9H2O-catalyzed aerobic oxidative deoximation of ketoximes and aldoximes under mild conditions
Li, Yongshu,Xu, Nizhou,Mei, Guangyao,Zhao, Yun,Zhao, Yiyong,Lyu, Jinghui,Zhang, Guofu,Ding, Chengrong
supporting information, p. 810 - 814 (2018/08/09)
A mild, simple process for the effective aerobic oxidative deoximation of a wide range of ketoximes and aldoximes has been developed that utilizes Fe(NO3)3·9H2O as the single catalyst and molecular oxygen as the green oxidant. The environmentally benign protocol provides moderate to excellent yield and broad functional groups tolerance and is a valuable synthetic method for practical applications. According the relevant verification experiment, a plausible mechanism has been proposed.
Acid Catalyzed Direct-Amidation-Dehydrocyclization of 2-Hydroxy-acetophenones to Benzoxazoles by a One-Pot Sustainable Synthesis
Rancan, Elia,Aric, Fabio,Quartarone, Giuseppe,Ronchin, Lucio,Vavasori, Andrea
, p. 939 - 946 (2015/08/06)
A series of 2-methyl-benzoxazoles have been synthesized starting from 2-hydroxy-acetophenones via a one-pot three steps reaction. Hydroxylamonium salt has been used as amidation agent. The reaction occurs with different anions, but the best results is achieved with hydroxylamonium hydrchloride. Despite the number of consecutive stages, the reaction is highly selective. Mild reaction conditions and various solvents can be used, but trifluoroacetic acid is the preferred. Almost, complete recovery of the trifluoroacetic acid can be achieved by vacuum distillation. The role of trifluoroacetic acid, as well as, of the hydroxylamonium salt suggests a cooperative effect leading to high selective formation of 2-methyl-benzoxazoles. Graphical Abstract: One-pot TFA catalyzed synthesis of benzoxazoles starting from 2-hydroxyacetophenones. (Chemical Equation Presented).
