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G. D. Kolomnikova T. O. Krylova I. V. Chernoglazova P. V. Petrovskii Yu. G. Gololobov 《Russian Chemical Bulletin》1993,42(7):1188-1190
In the presence of trifluoroacetic acid, ethyl 2-cyanoacrylate readily reacts with nucleophilic reagents, such as 2-chloro-1,3,2-benzodioxaphosphole, (EtO)3P, (EtO)2PCl, Ph2PCl, Ph3P, and thiourea. In these reactions the acid proton enters position 2 of the cyanoacrylate, whereas the nucleophilic component enters position 3, in accordance with the electron density distribution in the acrylate. In the absence of trifluoroacetic acid the above reagents, except 2-chloro-1,3,2-benzodioxaphosphole, cause ethyl 2-cyanoacrylate polymerization. The interaction of ethyl 2-cyanoacrylate with 2-chloro-1,3,2-benzodioxaphosphole and trifluoroacetic acid is the first example of a 2-cyanoacrylate taking part in the acid-initiated electrophilic conjugate addition of a weak nucleophile.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1245–1247, July, 1993. 相似文献
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G. D. Kolomnikova D. Yu. Prikhodchenko P. V. Petrovskii Yu. G. Gololobov 《Russian Chemical Bulletin》1992,41(8):1497-1499
-Cyanoacrylic acid and -cyanoacrylates add dialkyl and diaryl phosphites and diethyl thiophosphite at the C=C double bond in the absence of catalyst. This is an anti-Markovnikov reaction, which yields the corresponding phosphonates and thiophosphonates.A. N. Nesmeyanov Institute of Organometallic Compounds, Russian Academy of Sciences, 117813 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 8, pp. 1913–1915, August, 1992. 相似文献
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G. D. Kolomnikova M. I. Kalinkin Z. N. Parnes D. N. Kursanov 《Russian Chemical Bulletin》1981,30(5):921-923
Conclusions The system HCOOH-sulfo cationite KU-1 is a convenient proton donor and at the same time is a medium for running the ionic hydrogenation of olefins, carbonyl compounds, thiophenes, and azomethines.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1162–1164, May, 1981. 相似文献
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Mikhail E. Gurskii Galina D. Kolomnikova Sergey V. Baranin Yurii N. Bubnov 《Mendeleev Communications》2018,28(4):366-368
The first synthesis of 3,5-dimethyl-1-boraadamantane from its easily available tetrahydrofuran adduct comprised sequential treatment with BuLi, AcCl, (Cy2BH)2 and heating. The compound was converted into its electronic ‘antagonist’, namely, 3,5-dimethyl-1-azaadamantane. 相似文献
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Kolomnikova G. D. Petrovskii P. V. Sorokin P. V. Dolgushin F. M. Yanovsky A. I. Chizhevsky I. T. 《Russian Chemical Bulletin》2001,50(4):706-715
The reaction of OsCl2(PPh3)3 with [nido-7-R1-8-R2-C2B9H10]K+ produced a series of new exo-nido-osmacarborane complexes exo-nido-5,6,10-[Cl(Ph3P)2Os]-5,6,10-(-H)3-10-H-7-R1-8-R2-7,8-C2B9H6 (1: R1 = R2 = H; 2: R1 = R2 = Me; 3: R1 = R2 = PhCH2; 4: R1 + R2 = 1,2-C6H4(CH2)2; 5: R1 = H, R2 = Me) in which the osmium-containing group is linked to the nido-carborane ligand through three two-electron three-center bonds. Compounds 1—5 are formed as mixtures of symmetric (a) and asymmetric (b) isomers; pure symmetric isomers 2a and 4a were isolated by fractional crystallization, and the mixture of isomers 3a, was quantitatively separated into individual compounds 3a and 3b by column chromatography on silica gel. Detailed analysis of the 31P{1H}, 1H, 11B NMR spectra of 1a,b—5a,b and 2D 1H-1H{11B} and 11B{1H}-11B{1H} NMR spectra of 3a and 3b was performed. The structures of isomers 2a and 4a were confirmed by an X-ray diffraction study. According to the NMR and X-ray diffraction data, the isomerism of exo-nido-complexes 1a,b—5a,b is actually the cis—trans-isomerism of ligand arrangement in the octahedral coordination of the Os atom. 相似文献
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G. G. Vasiyarov M. I. Kalinkin S. N. Ananchenko G. D. Kolomnikova I. V. Torgov Z. N. Parnes D. N. Kursanov 《Russian Chemical Bulletin》1981,30(9):1761-1763
Conclusions (Ph3P)2PtCl2, Ru(OCOCF3)3 and (Ph3P)3IrH3 in CF3COOH as the medium catalyze the ionic hydrogenation of bisdehydroestranes.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2144–2146, September, 1981. 相似文献
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