排序方式: 共有5条查询结果,搜索用时 46 毫秒
1
1.
L. L. Troitskaya Z. A. Starikova T. V. Demeshchik V. I. Sokolov 《Russian Chemical Bulletin》1999,48(9):1738-1743
The reaction of an enantiomeric planar-chiral palladium derivative of dimethyl-aminomethylferrocene with PhMePLi in THF at room temperature afforded a 1.5∶1.0 mixture of diastereomeric aminophosphines containing the phosphorus asymmetrical center along with a chiral plane. The absolute configuration of the phosphorus atom was determined based on the X-ray diffraction data for the complex of the minor diastereomer with PdI2. The presence of the (S)-chiral plane in the initial palladium compound favors the predominant formation of the product with the (S)-configuration of the phosphorus center. 相似文献
2.
Troitskaya L. L. Demeshchik T. V. Sokolov V. I. Mamed"yarova I. A. Malezieux B. Gruselle M. 《Russian Chemical Bulletin》2001,50(3):497-503
Trialkyl(ferrocenylmethyl)ammonium salts and their 2-substituted analogs designed for the preparation of molecular ferromagnetics based on bimetallic oxalates were synthesized using classical alkylation of dialkylaminomethylferrocenes by alkyl halides and nucleophilic substitution reaction of 2-substituted dimethylaminomethylferrocene methiodides with trialkylamines. In the case of salts with electron-donating substituents in position 2, only the latter of the two proposed routes is applicable because N-alkylation with alkyl halides is accompanied by competing ferrocenylmethylation of the starting amine. On the contrary, the salts with electron-withdrawing 2-substituents should be prepared preferably by the reaction of amines with alkyl halides, while nucleophilic trialkylamination of methiodides is complicated by deprotonation induced by bases. 相似文献
3.
The carbonylation of the chelated palladium derivative of dimethylaminoferrocene in the presence of diatomic phenols affords mixtures of the corresponding mono- and diacylated dihydroxybenzenes containing a 2-dimethylaminomethylferrocenyl fragment in the acyl moiety.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2756–2758, December, 2004. 相似文献
4.
M. A. Bazhenova S. S. Bogush A. G. Herbst T. V. Demeshchik Yu. G. Komarovskaya V. S. Kurova M. D. Reshetova A. D. Ryabov E. S. Ryabova Yu. N. Frrsova 《Russian Chemical Bulletin》1996,45(10):2445-2451
Absract Simple methods have been developed for the preparation of a series ofn-alkylferrocenes H(CH2)
n
Fc (n = 3, 5–8, or 12) based on Friedel-Crafts acylation of ferrocenes followed by reduction of the corresponding ketones with Zn amalgam. The properties of H(CH2)
n
Fc and the corresponding ferrocenium ions in micellar aqueous solutions and the behavior of water-soluble cations H(CH2)
n
Fc+ in the absence of micelles were studied by cyclic voltammetry. In all cases, the formal redox potentials of ferrocenes (E
o) increase linearly asn increases up to 8. Whether micelles are present or not, the corresponding correlation equation has the following form:E
o= + n, where = 29 mV in all cases. The synthesis of (±)-1-ethyl-2-methylferrocene from racemic -dimethylaminoethylferrocene is reported.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 2575–2581, October 1996. 相似文献
5.
Troitskaya L. L. Demeshchik T. V. Ovseenko S. T. Starikova Z. A. Sokolov V. I. Malezieux B. Gruselle M. 《Russian Chemical Bulletin》2003,52(3):616-623
The formation of a new chiral center in the reactions of ketone 4-MeOC6H4CH(Et)C(O)Et with planar-chiral 2-lithio-1-methyl- and 1-chloro-2-lithioferrocenes proceeded stereoselectively to give two diastereomers in a ratio of 3 : 2 or a single diastereomer, respectively, out of four possible diastereomeric 4-aryl-3-ferrocenylhexan-3-ols. The replacement of the hydroxy group in the resulting compounds by hydrogen under the conditions of ionic hydrogenation was studied. The configurations of the reaction products were established by X-ray diffraction analysis and 1H NMR spectroscopy. 相似文献
1