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1.
Richard P. Kent IV 《Geometriae Dedicata》2004,106(1):145-159
We answer a question of J. Anderson's by producing infinitely many commensurability classes of fibered hyperbolic 3-manifolds whose fundamental groups contain subgroups that are locally free and not free. These manifolds are obtained by performing 0–surgery on a collection of knots with the same properties. 相似文献
2.
3.
N. A. Nesterova I. I. Gavrilova E. F. Panarin 《Russian Journal of Applied Chemistry》2007,80(12):2129-2131
The possibility of using horse radish peroxidase as a catalyst for polymerization of monomers (vinylformamide and sodium vinylsulfonate) in the presence of hydrogen peroxide and 2,4-pentanedione in aqueous medium at room temperature was studied. 相似文献
4.
K. B. Yatsimirskii M. I. Kabachnik T. Ya. Medved' N. P. Nesterova É. I. Sinyavskaya L. V. Tsymbal F. I. Bel'skii 《Russian Chemical Bulletin》1988,37(1):44-49
1. | Stability constants for alkali metal complexes of composition [ML]+ and a copper complex [CuLCl]+, which are formed via treatment of alkali metal 2,4-dinitrophenolate or copper chloride with a series of carbamoyl phosphine oxide derivatives, have been determined in anhydrous solutions. |
2. | The most stable complexes are formed by ligands containing an aryl substituent attached to the phosphorus atom. |
5.
The aminolysis of 5-aryl-3-arylidene-3H-furan-2-ones by the action of aromatic amines leads to the formation of substituted amides of 4-oxo acids, the subsequent azacyclization of which in the presence of acetic anhydride leads to the formation of 1,5-diaryl-substituted 3-arylidene-3H-pyrrol-2-ones. The mechanism of the occurring and alternative transformations is discussed. 相似文献
6.
M. A. Bastrakov A. M. Starosotnikov V. V. Kachala E. N. Nesterova S. A. Shevelev 《Russian Chemical Bulletin》2007,56(8):1603-1607
Reaction of different anionic S-nucleophiles with 3-R-2-aryl-4,6-dinitroindoles led to a regiospecific nucleophilic substitution
of the nitro group in position 4 with 6-NO2 group remaining intact. The representatives of some peri-annulated polycyclic systems were synthesized on the basis of the substitution products.
Dedicated to Academician V. A. Tartakovsky in honor of his 75th anniversary.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1543–1547, August, 2007. 相似文献
7.
8.
T. L. Nesterova N. P. Shusherina V. A. Shmorgunov P. B. Terent'ev 《Chemistry of Heterocyclic Compounds》1982,18(11):1139-1143
The stereochemistry of the successive addition of two different dienophiles, viz., N-phenylmaleinimide and 4-phenyl-1,2,4-triazoline-3,5-dione, to 2-pyrones was studied. The configurations of the mixed adducts (bisimides) obtained were established by PMR and mass spectrometry. It is shown that in all cases the reactions proceed with the formation of mixtures of syn and anti isomers, the ratios of which depend on the positions of the methyl groups in the starting 2-pyrones.See [1] for communication 30.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1471–1476, November, 1982. 相似文献
9.
Svitlana R. Petrusenko Wolfgang Linert Viktoria V. Dyakonenko Oksana V. Nesterova Oleg V. Shishkin 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(7):m281-m283
The title salt, [Zn(C2N2H8)3]2[CdI4]I2, conventionally abbreviated [Zn(en)3]2[CdI4]I2, where en is ethylenediamine, contains discrete [Zn(en)3]2+ cations and [CdI4]2− anions with distorted octahedral and nearly tetrahedral geometries, respectively, as well as uncoordinated I− ions. The cation and the free I− anion lie on twofold rotation axes and the [CdI4]2− anion lies on a axis in the space group I2d. The structure exhibits numerous weak inter‐ionic hydrogen bonds of two types, viz. N—H⋯I−(free ion) and N—H⋯I([CdI4]2−), which support the resulting three‐dimensional framework. 相似文献
10.
E. Yu. Nesterova M. V. Voevudsky A. V. Samukha R. I. Zubatyuk O. V. Shishkin 《Chemistry of Heterocyclic Compounds》2005,41(12):1511-1520
Acylation of 3-ethoxycarbonyl-2,6-dimethyl-5-pyridinecarboxylic acid hydrazide and 2,6-dimethyl-3,5-pyridinedicarboxylic acid
dihydrazide using aromatic acid chlorides gave the corresponding N-aroyl hydrazides. It was found that the hydrazinolysis
of 3-ethoxycarbonyl-2,6-dimethyl-5-pyridinedicarboxylic acid N-aroyl hydrazides occurred not at the ester group but as a rehydrazinolysis
reaction at the dihydrazide fragment.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1834–1845, December, 2005. 相似文献