排序方式: 共有25条查询结果,搜索用时 15 毫秒
1.
Tartakovskii V. A. Shevelev S. A. Dutov M. D. Serushkina O. V. Kachala V. V. 《Russian Journal of Organic Chemistry》2003,39(3):397-402
Treatment of 2,4,6-trinitrotoluene with -mercaptocarboxylic acid esters and subsequent oxidation gave 2-(alkoxycarbonyl-R-methylsulfonyl)-4-X-6-nitrotoluenes which were brought into Knoevenagel condensation with aromatic aldehydes (heating in benzene in the presence of secondary amine acetates). As a result of intramolecular cyclization, 2-alkoxycarbonyl-3-aryl-2-R-5-X-7-nitrothiochroman 1,1-dioxides (R = H, Me; X = NO2, R'SO2) were obtained. The developed procedure opens the way to hitherto unknown thiochroman 1,1-dioxide derivatives. 相似文献
2.
3.
M. G. Bugaenko A. L. Rusanov E. G. Bulycheva S. A. Shevelev M. D. Dutov O. V. Serushkina A. V. Pisareva Yu. A. Dobrovol’skii 《Polymer Science Series B》2013,55(7-8):478-483
A new method for the synthesis of sulfonated polynaphthylimides has been developed on the basis of the postsulfonation of high-molecular-mass polynaphthylimides with a sulfuric acid-oleum mixture. Sulfonated polymers of this type have been obtained from the polycondensation products of 5-phenylthiophenylene-1,3-diamine with dianhydrides of 1,4,5,8-naphthalenetetracarboxylic acid and 4,4′-(1,4-phenylenedicarbonyl)-bis-naphthalene-1,8-dicarboxylic acid. It has been shown that hydrogen peroxide oxidation of sulfide bridge groups of these polymers in an acidic medium yields high-molecular-mass compounds that contain sulfonic bridge fragments and, therefore, have increased thermal stabilities and enhanced proton conductivities. 相似文献
4.
The reactions of 2,4,6-trinitrotoluene with alkanethiols in the presence of K2CO3 (the molar ratio of the reactants is 1 : 1 : 1) in dipolar aprotic solvents result in selective replacement of the ortho-nitro group to form 2-alkylthio-4,6-dinitrotoluenes, which can be oxidized to the corresponding sulfoxides or sulfones. The second ortho-nitro group can be replaced under the action of one more equivalent of alkanethiol on sulfides as exemplified in PhCH2SH. 相似文献
5.
Alexander L. Rusanov Ludmila G. Komarova Tatyana S. Sheveleva Marina P. Prigozhina Svyatoslav A. Shevelev Michai L. D. Dutov Irina A. Vatsadze Olga V. Serushkina 《Macromolecular Symposia》1997,122(1):123-128
New aromatic diamines were obtained on the basis of available and inexpensive 2, 4, 6-trinitrotoluene (trotyl, TNT). Monomers obtained were used for the preparation of the new organo-soluble polyimides containing thiophenoxy and phenoxy side groups. 相似文献
6.
7.
Artamkina G. A. Petrov A. R. Serushkina O. V. Dutov M. D. Shevelev S. A. Beletskaya I. P. 《Russian Journal of Organic Chemistry》2003,39(6):846-859
Arylation catalyzed by palladium complexes of substituted anilines obtained by modification of 2,4,6-trinitrotoluene makes possible preparation of various diaryl- and arylheterylamines in high yields. 相似文献
8.
9.
10.
A. L. Rusanov L. G. Komarova M. P. Prigozhina A. A. Askadskii S. A. Shevelev M. D. Dutov O. V. Serushkina V. Yu. Voytekunas M. J. M. Abadie 《Polymer Science Series B》2008,50(3-4):70-74
Aromatic polyethers with phenylsulfone side groups were obtained via the reaction of aromatic nucleophile substitution using 3,5-dinitrodiphenylsulfone as an electrophilic monomer activated by meta-substituents. The polymers are characterized by solubility in a variety of organic solvents and by large intervals between the softening and thermal degradation temperatures, properties that determine their improved processability into articles. 相似文献