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61.
A. V. Nemtarev V. F. Mironov A. S. Aniskin D. S. Baranov E. V. Mironova D. B. Krivolapov R. Z. Musin S. F. Vasilevskii N. O. Druzhkov V. K. Cherkasov 《Russian Chemical Bulletin》2013,62(1):55-70
The reactions of 2,2,2-trichlorobenzo-1,3,2-dioxaphosphole and its benzo-substituted derivatives with arylacetylenes containing strong +M-donors and -M-acceptors afford benzo[e]-1,2-oxaphosphinine 2-oxides (phosphacoumarins) in high yields. Studies by the competitive reaction method showed that the reaction rate is sensitive to the electronic nature of the substituent in arylacetylene. Thus, the introduction of +M-donors into the phenyl ring of arylacetylene leads to an increase in the reaction rate, whereas the introduction of -M-acceptors results in its substantial decrease. The molecular and supramolecular structures of selected 2-hydroxyphosphacoumarins and substituted vinylphosphonate, which is generated by the cleavage of the P-heterocycle, were studied by X-ray diffraction. 相似文献
62.
M. N. Dimukhametov V. F. Mironov D. B. Krivolapov E. V. Mironova R. Z. Musin 《Russian Chemical Bulletin》2013,62(4):1091-1096
The reaction of 2-(2-benzylidenamino)phenoxy-4-tert-butylbenzo-1,3,2-dioxaphosphol with ethyl mesoxalate and ethyl trifluoropyruvate resulted in the formation of tricyclic phosphoranes with the P-C and P-N bonds. The adduct emerged from the initial reaction of the PIII derivative with the activated ketone (1: 1), further underwent the transformation via the intramolecular reaction involving the benzylideniminoaryl substituent, which resulted in the formation of the cage-like phosphoranes. 相似文献
63.
A. V. Bogdanov V. F. Mironov A. B. Dobrynin O. I. Gnezdilov 《Russian Journal of Organic Chemistry》2013,49(11):1623-1627
Regioselective bromination of 4-phenyl-2,7-dichloro-2H-chryseno[6,5-e][1,2]phosphinine 2-oxide proceeded in the position 3 with the formation of 3-bromo-4-phenyl-2,7-dichloro-2H-chryseno[6,5-e][1,2] phosphinine 2-oxide; the structure of its 2-tert-butylamino derivative was established by XRD analysis and correlation spectroscopy. 相似文献
64.
V. F. Mironov Yu. I. Sal’nikov G. A. Boos D. A. Tatarinov A. P. Nikitin 《Russian Journal of General Chemistry》2013,83(6):1087-1093
Four new compounds, asymmetrical phosphine oxides containing 2-hydroxyphenylethenyl fragment in cis-orientation with respect to the phosphine oxide: dibutyl-, diphenyl-, dibenzyl-, and dinaphthyl-2-(2-hydroxy-5-chlorophenyl)-2-phenyl-ethenylphospnine oxides, have been studied in aqueous ethanol (80 vol % of EtOH) by means of potentiometry and spectrophotometry at 25±0.1°C, and their acid-base and complexing properties estimated. 相似文献
65.
66.
E. V. Mironova B. I. Buzykin V. N. Nabiullin I. A. Litvinov V. F. Mironov 《Journal of Structural Chemistry》2013,54(3):630-634
Molecular and crystal structures of dimephosphone nicotinoylhydrazone and dimephosphone isonicotinoylhydrazone exhibiting antiphthisic activity are studied. In contrast to aroylhydrazones of arylaldehydes, existing in the crystalline state as a mixture of two amide conformers, the studied hydrazones exist in the crystalline state in the single geometrical form E C=N E N-N Z N-C(O). 相似文献
67.
Maxim A. Mironov Iliya D. Shulepov Vladislav S. Ponomarev Vasily A. Bakulev 《Colloid and polymer science》2013,291(7):1683-1691
A novel method for obtaining cross-linked microgels of apple pectin has been introduced. This method is based on the Ugi four-component condensation in colloidal suspensions of pectinic acid and amines. Using various processing parameters (the polysaccharide concentration, the type and density of crosslink, and the optimal pH range), particles with controlled colloidal properties have been obtained. Lightly cross-linked polysaccharide chains acquire anionic character due to deprotonation of the carboxyl groups at pH?9–10. Increasing the degree of cross-linking leads to a polyampholyte microgel, which can be protonated in acidic medium or deprotonated in basic medium. Polyampholyte microgels derived from apple pectin have proved to be an effective Pickering emulsifier at low concentrations and pH?2–3, forming stable oil-in-water emulsions. These Pickering emulsions exhibited pH-responsive behavior: raising the solution pH to 10 resulted in immediate demulsification due to the destabilization of microgel network at the oil–water interface. 相似文献
68.
Journal of Structural Chemistry - Two new compounds of the composition [Cu2(en)2(μ-CN)][{Cu(en)}3Re6Q8(CN)6]·en·H2O (Q = S, Se) are synthesized under solvothermal... 相似文献
69.
Journal of Structural Chemistry - Chain coordination polymer [Cu(bpy)3][{Cu(bpy)}2Re4Se4(CN)12]·3.5H2O (1) is obtained by the reaction of K4[Re4Se4(CN)12]·6H2O with CuCN and... 相似文献
70.
Potapov I. D. Voznarskiy A. Yu. Mironov A. V. Motyakin M. V. Nekipelova T. D. Podrugina T. A. 《Russian Chemical Bulletin》2022,71(5):1027-1033
Russian Chemical Bulletin - A new approach to the synthesis of λ5-phosphinolines was developed consisting in the reaction of mixed phosphonium-iodonium ylides with acetylenes in the presence... 相似文献