Центральная Научная Библиотека УрО РАН

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   A 48


    Aminomethylation of chlorophyll a derivatives using bis(N,N-dimethylamino) methane [Text] / D. V. Belykh, I. S. Tarabukina, D. A. Gruzdev, M. I. Kodess, A. V. Kutchin // Journal of Porphyrins and Phthalocyanines. - 2009. - Vol. 13, № 7-8. - P949-956

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Bis(N,N-dimethylamino)methane has been shown to be a convenient reagent for the aminomethylation of chlorophyll a derivatives. Methylpheophorbide a (in enol form) and chlorin e6 13-amides were aminomethylated with bis(N,N-dimethylamino)methane. Reactivity of methylpheophorbide a exo-ring and chlorin e6 13-amides vinyl group were shown to be different. Selective methylpheophorbide a exo-ring aminomethylation was realized and isomerization of the exo-ring aminomethylation product with rhodochlorin 15-acrylic derivative formation was studied. The action of bis(N,N- dimethylamino)-methane in the presence of weak acid has been shown to be a simple and effective synthetic procedure to obtain a new chlorin e6 derivative with two N,N-dimethylaminomethyl substituents in the vinyl group. The aminomethylation products' high yields, the simplicity of the procedure, the use of metal-free chlorines and the possible synthesis of new compounds, were found to be the main advantages of using bis(N,N-dimethylamino)methane as an aminomethylation reagent in chlorophyll a derivatives' chemistry

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   S 98


    Synthesis of carbon encapsulated metal (Ni and Cu) nano particles and applications for chiral catalysts [Text] / Young Rang Uhm , Hi Min Lee , O. V. Fedorova, I. G. Ovchinnikova, M. S. Valova, G. L. Rusinov, V. N. Charushin, Chang Kyu Rhee // Research on Chemical Intermediates . - 2010. - Vol. 36, № 6-7. - P867-873. - Bibliogr. : p. 873 (15 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Carbon-encapsulated Ni and Cu nanoparticles with a core/shell structure were synthesized by levitational gas condensation (LGC). Methane (CH4) gas was used to coat the surface of the Ni and Cu nanoparticles. The Ni particles had a core diameter of 10 nm, and were covered by 2–3 nm thin carbon layers. In the case of Cu, the particles had a core diameter of 30 nm, and multi-shells with a thickness of 2–3 nm. Biginelli reaction in the presence of l-proline and Ni encapsulated nanoparticles was carried out to change the ratio between stereoisomers in favor of the S-enantiomer for 3,4–dihydropyrimidine (DHPM) with an excess of about 18%

\\\\Cserver\\dist\\НБО\\Электронная библиотека_Библиогр1\\Research on Chemical Intermediates\\2010, v. 36, N. 6-7, p.867.pdf
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   F 33


    Features of the reaction of 3(5)-methyl-5(3)-trifluoromethylpyrazole with chloroform. Synthesis and structure of fluorinated analogs of tris(pyrazol-1-yl)methane / N. S. Boltacheva, P. A. Slepukhin, M. G. Pervova, M. A. Samorukova, L. G. Lavrenova, V. I. Filyakova, V. N. Charushin // Russian Journal of General Chemistry. - 2012. - Vol.82, №8. - С. 1444-1450

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CHLOROFORM -- TRIFLUOROMETHYLPYRAZOLE -- TRIS(PYRAZOL-1-YL)METHANE
Аннотация: Reaction of 3(5)-methyl-5(3)-trifluoromethylpyrazole (I) with chloroform leads to a complex mixture of compounds. The main components are {bis[(5-methyl-3-trifluoromethyl)pyrazol-1-yl](3-methyl-5-trifluoromethyl)pyrazol-1-yl}methane, bis{[(3-methyl-5-trifluoromethyl)pyrazol-1-yl](5-methyl-3-trifluoromethyl)-pyrazol-1-yl}methane, and tris[(3-methyl-5-trifluoro-methyl)pyrazol-1-yl]methane. The structure of isomeric substances was proved by XRD method

\\\\Expert2\\nbo\\Russian Journal of General Chemistry\\2012, V. 82, N 8, p. 1444–1450.pdf
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