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1.
Mironov V. F. Shtyrlina A. A. Gubaidullin A. T. Bogdanov A. V. Litvinov I. A. Azancheev N. M. Latypov Sh. K. Musin R. Z. Efremov Yu. Ya. 《Russian Chemical Bulletin》2004,53(1):194-212
2,2,2-Trichloro-5-chlorocarbonylbenzo[d]-1,3,2-dioxaphosphole was prepared for the first time by the reaction of protocatechuic acid with phosphorus pentachloride or trichloride followed by chlorination. According to the results of NMR spectroscopy, the reaction of this phosphole with phenylacetylene gave rise to 2,5-dichloro- and 2,8-dichloro-6-chlorocarbonyl-2-oxo-4-phenylbenzo[e]-1,2-oxaphosphorinines as the major products. The molecular and supramolecular structures of their stable derivatives, viz., 2-tert-butylamino-6-tert-butylaminocarbonyl-5-chloro-2-oxo-4-phenylbenzo[e]-1,2-oxaphosphorinine and isopropylammonium 8-chloro-6-isopropylaminocarbonyl-2-oxo-4-phenylbenzo[e]-1,2-oxaphosphorinin-2-oate, respectively, were established by X-ray diffraction analysis. 相似文献
2.
Mironov V. F. Petrov R. R. Shtyrlina A. A. Litvinov I. A. Gubaidullin A. T. Varaksina E. N. Konovalov A. I. 《Russian Chemical Bulletin》2001,50(4):693-696
The reaction of 4,6-bis(tert-butyl)-2,2,2-trichlorobenzo[d]-1,3,2-dioxaphosphole with phenylacetylene follows the mechanism of ipso-substitution of the tert-butyl group that is in para-position relative to the endocyclic O atom of the heterocycle, predominantly yielding 8-(tert-butyl)-2,6-dichloro-2-oxo-4-phenylbenzo[e]-1,2-oxaphosphorinine (NMR data). The structure of its hydrolysis product, 8-(tert-butyl)-6-chloro-2-hydroxy-2-oxo-4-phenylbenzo[e]-1,2-oxaphosphorinine, was proved by X-ray diffraction analysis. 相似文献
3.
V. F. Mironov E. N. Varaksina D. A. Tatarinov A. A. Shtyrlina A. B. Dobrynin I. A. Litvinov 《Russian Journal of General Chemistry》2008,78(2):192-196
2,2,2,6-Tetrachloro-4-phenylbenzo[e][1,2]oxaphosphinine and 2,2,6-trichloro-4-phenylbenzo[e][1,2λ5]-oxaphosphinin-2-ylium hexachlorophosphate were prepared by treatment of 2,6-dichloro-4-phenylbenzo[e][1,2λ5]-oxaphosphinine 2-oxide with phosphorus pentachloride. The structure of the latter compound was proved by means of X-ray
diffraction analysis.
Original Russian Text ? V.F. Mironov, E.N. Varaksina, D.A. Tatarinov, A.A. Shtyrlina, A.B. Dobrynin, I.A. Litvinov, 2008,
published in Zhurnal Obshchei Khimii. 2008, Vol. 78, No. 2, pp. 210–215. 相似文献
4.
V. F. Mironov N. M. Azancheev R. Z. Musin A. I. Konovalov 《Russian Journal of General Chemistry》2005,75(4):541-548
It was for the first time shown that 2,2,2-tribromo- and 2,2-dibromo-2-fluoro-5-halobenzo[d]-[1,3,2λ5]dioxaphospholes react with arylacetylenes with preferential formation of heterocycles monohalogenated in the benzo fragment, viz. 4-aryl-2-bromo(fluoro)-7-halobenzo[e][1,2]oxaphosphinines. Their structure was established by NMR spectroscopy. By varying in such a way the nature of the halogen at the phosphorus atom one can obtain 6- or 7-halo-substituted regioisomers of benzo[e][1,2]oxaphosphinines.__________Translated from Zhurnal Obshchei Khimii, Vol. 75, No. 4, 2005, pp. 579–586.Original Russian Text Copyright © 2005 by Mironov, Azancheev, Musin, Konovalov.For communication VI, see [1]. 相似文献
5.
A. V. Nemtarev V. F. Mironov A. V. Bogdanov V. K. Cherkasov N. O. Druzhkov A. T. Gubaidullin I. A. Litvinov R. Z. Musin 《Russian Chemical Bulletin》2009,58(1):182-190
A reaction of 3,6-di(tert-butyl)-1,2-benzoquinone with alkynes in the presence of phosphorus trichloride leads to a predominant formation of 4-alkyl-
and 4-haloalkyl-5,8-di(tert-butyl)-2,6-dichloro-2 H- benzo[e][1,2]oxaphosphinine 2-oxide. An ipso-substitution of the tert-butyl group at ortho-position to the oxygen atom of the benzophosphinine system with the formation of 4-alkyl-5- tert-butyl-2,8-dichloro-2 H-benzo[e][1,2]oxaphosphinine 2-oxide was the minor route of the reaction with alkylacetylenes. Molecular structures of 4-butyl-5,8-di(
tert-butyl)-2,6-dichloro-2 H- benzo[e][1,2]oxaphosphinine 2-oxide and 5,8-di( tert-butyl)-2,6-dichloro-4-hexyl-2 H-benzo[e][1,2]oxaphosphinine 2-oxide were studied by X-ray analysis. 相似文献
6.
S. A. Amitina I. V. El’tsov T. V. Rybalova Yu. V. Gatilov I. A. Grigor’v 《Russian Chemical Bulletin》2004,53(8):1700-1703
Reactions of alicyclic 2-hydroxyamino oximes with pentafluorophenylglyoxal afford mixtures of annelated derivatives of 2-pentafluorophenylpyrazine 1,4-dioxide and tetrafluoro- 10H-imidazo[1,2-b][1,2]benzooxazin-10-one. The structures of the latter were established by X-ray diffraction analysis.Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1636–1639, August, 2004. 相似文献
7.
György Keglevich Andrea Kerényi Beatrix Mayer Tamás Körtvélyesi Krisztina Ludányi 《Transition Metal Chemistry》2008,33(4):505-510
2-Alkoxy-dibenzo[c.e][1,2]oxaphosphorines were prepared by the reaction of chloro-dibenzooxaphosphorine with alcohols and were converted to the
cyclic phosphonates by oxidation and to the corresponding phosphonous boranes by reaction with borane-dimethylsulfide. Interaction
of the alkoxy-dibenzooxaphosphorines with dichlorodibenzonitrileplatinum led to bis(dibenzooxaphosphorino)dichloroplatinum
complexes exhibiting the P-ligands in the cis disposition. Relative energetics for the prepared cis and the theoretically possible trans isomers of the complexes along with their stereostructures were investigated by quantum chemical calculations. 相似文献
8.
V. V. Tkachev S. M. Aldoshin G. V. Shilov V. N. Komissarov Yu. A. Sayapin M. S. Korobov G. S. Borodkin V. I. Minkin 《Russian Chemical Bulletin》2007,56(2):276-280
The structure of the oxidation product of 4,6-di(tert-butyl)pyrogallol, viz., 6,10a-dihydroxy-3,4a, 7,9-tetra(tert-butyl)-1,2,4a,10a-tetrahydrodibenzo[b,e][1,4]dioxine-1,2-dione, was established by X-ray diffraction. Dimerization of intermediate 3-hydroxy-4,6-di(tert-butyl)-1,2-benzoquinone occurs by the mechanism of Diels—Alder heterocyclization.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 267–271, February, 2007. 相似文献
9.
V. F. Mironov A. V. Bogdanov A. V. Nemtarev A. A. Shtyrlina E. N. Varaksina V. K. Cherkasov A. B. Dobrynin D. B. Krivolapov R. Z. Musin I. A. Litvinov A. I. Konovalov 《Russian Chemical Bulletin》2007,56(9):1900-1910
The reactions of 3,5-di(tert-butyl)-1,2-benzoquinone with aryl-and alkylacetylenes in the presence of phosphorus trichloride afford 4-aryl(alkyl)-8-tert-butyl-2,6-dichloro-2-oxo-2H-benzo[e][1,2]oxaphosphinines as the major ipso-substitution products of the tert-butyl group by the chlorine atom. 4-Aryl(alkyl)-6,8-di(tert-butyl)-2,5-dichloro-2-oxo-and 4-aryl(alkyl)-6-tert-butyl-2,8-dichloro-2-oxo-2H-benzo[e][1,2]oxaphosphinines were obtained as the minor products. The structures of the stable representatives of this series were
confirmed by X-ray diffraction.
Dedicated to Academician G. A. Abakumov on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1836–1845, September, 2007. 相似文献
10.
A. V. Nemtarev V. F. Mironov E. N. Varaksina A. T. Gubaidullin D. B. Krivolapov R. Z. Musin I. A. Litvinov 《Russian Chemical Bulletin》2014,63(1):149-177
A reaction of 2,2,2-trihalobenzo-1,3,2-dioxaphospholes with terminal alkylacetylenes proceeds under mild conditions (~20 °C) and leads to the formation of 4-alkylbenzo[e]-1,2-oxaphosphinine 2-oxide derivatives. The presence of aliphatic substituents in acetylene decreases (as compared to their aromatic counterparts described earlier) regioselectivity of halogenation of benzo fragment in 4-alkylbenzo[e]-1,2-oxaphosphinines: besides predominant 4-alkyl-2,6-dihalobenzo[e]-1,2-oxaphosphinines, minor 2,7- and 2,8-dihalo-substituted 4-alkylbenzo[e]-1,2-oxaphosphinines are formed. An unusual thermal isomerization of 4-alkyl-2-fluorobenzo[e]-1,2-oxaphosphinines to 4-alkylidene-2-fluoro-3,4-dihydrobenzo[e]-1,2-oxaphosphinines was discovered. Molecular and supramolecular structures of some 4-alkylbenzo[e]-1,2-oxaphosphinines were studied by X-ray diffraction analysis. 相似文献
11.
S. W. Wright 《Journal of heterocyclic chemistry》2001,38(3):723-726
A procedure for the synthesis of benzo[e][1,3]thiazine‐2,4‐diones from benzamides by directed lithiation and sequential treatment with sulfur and phosgene is reported. Use of thiophosgene afforded 2‐thioxo‐2,3‐dihydro‐benzo[e][1,3] thiazin‐4‐ones. Application of this methodology to benzenesulfonamides afforded the previously unknown 1,1‐dioxo‐1,2‐dihydro‐1,4‐dithia‐2‐aza‐naphthalen‐3‐one ring system with phosgene and the 1,2‐dioxo‐2‐phenyl‐2,3‐dihydrobenzo[e][1,4,2]dithiazine‐3‐one ring system with thiophosgene. Use of selenium in place of sulfur afforded the novel analogous selenium heterocycles, however in the case of benzamides the use of selenium and phosgene afforded benzo[d]isoselenazol‐3‐ones unexpectedly. 相似文献
12.
Giulia Menozzi Alberto Bargagna Luisa Mosti Pietro Schenone 《Journal of heterocyclic chemistry》1986,23(2):455-458
The 1,4-cycloaddition of sulfene to N,N-disubstituted (E)-4-aminomethylene-3,4-dihydro[1]benzothiepin-5(2H)-ones I occurred only in the case of aliphatic N,N-disubstitution to give in good yield 4-dialkylamino-3,4,5,6-tetrahydro[1]benzothiepino[4,5-e][1,2]oxathiin 2,2-dioxides, which are derivatives of the new heterocyclic system [1]benzothiepino[4,5-e][1,2]oxathiin. Also the reaction of I with chlorosulfene occurred only in the case of aliphatic N,N-disubstitution to afford chiefly trans-4-dialkylamino-3-chloro-3,4,5,6-tetrahydro-[1]benzothiepino[4,5-e][1,2]oxathiin 2,2-dioxides III in satisfactory yield. Adducts III were dehydrochlorinated with DBN to 4-dialkylamino-5,6-dihydro[1]benzothiepino[4,5-e][1,2]oxathiin 2,2-dioxides in good yield. 相似文献
13.
I. V. Konovalova V. F. Mironov G. A. Ivkova E. R. Zagidullina A. T. Gubaidullin I. A. Litvinov M. A. Kurykin 《Russian Journal of General Chemistry》2005,75(4):549-560
2-R-benzo[e][1,3,2]dioxaphosphinin-4-ones react with perfluorodiacetyl under mild conditions to form relatively labile spirophosphoranes containing a 1,3,2-dioxaphosphole ring. These compounds gradually convert to more stable 2-R-4,5-bis(trifluoromethyl)-1,3,2λ5-dioxaphosphole 2-oxides and diastereometic 2-R-4-(trifluoroacetyl)-4-(trifluoromethyl)benzo[f][1,3,2λ5]dioxaphosphepine 2-oxides, whose structure was confirmed by means of NMR and IR spectroscopy. The structure of 4′,5′ -bis(trifluoromethyl)-4-oxo-2-(2,2,3,3-tetrafluoropropoxy)-2λ 5-spiro[benzo[e][1,3,2]dioxaphosphinine-2,2′-[1,3,2]dioxaphosphole] was confirmed by X-ray diffraction analysis.__________Translated from Zhurnal Obshchei Khimii, Vol. 75, No. 4, 2005, pp. 587–599.Original Russian Text Copyright © 2005 by Konovalova, Mironov, Ivkova, Zagidullina, Gubaidullin, Litvinov, Kurykin. 相似文献
14.
V. A. Mamedov L. V. Mustakimova A. T. Gubaidullin I. A. Litvinov Ya. A. Levin 《Russian Journal of Organic Chemistry》2004,40(9):1309-1317
4-Amino-3-(2-R-5-phenylthiazol-4-yl)-1,2,4-triazole-5-thiones react with methyl 3-chloro-2-oxo-3-phenylpropionate to give methyl 3-(2-R-5-phenylthiazol-4-yl)-7-phenyl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine-6-carboxylates. According to the X-ray diffraction data, the thiazole ring in the products is planar, while the thiadiazine ring has a distorted unsymmetrical boat conformation. Depending on the substituent in the thiazole ring, methyl 3-(2-R-5-phenylthiazol-4-yl)-7-phenyl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine-6-carboxylates in crystal give rise to different supramolecular structures, lamellar and cylindrical.Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 9, 2004, pp. 1358–1365.Original Russian Text Copyright © 2004 by Mamedov, Mustakimova, Gubaidullin, Litvinov, Levin. 相似文献
15.
I. P. Beletskaya E. G. Neganova Yu. A. Veits 《Russian Journal of Organic Chemistry》2004,40(12):1782-1786
Arylation and alkylation of 6H-dibenzo[c,e][1,25]oxaphosphinine 6-oxide at the phosphorus atom was accomplished. Tetrafluoro-4-pyridyl fragment was introduced via reaction of 6-trimethylsiloxy-6H-dibenzo[c,e][1,2]oxaphosphinine with pentafluoropyridine. The arylation of the title compound with aryl iodides containing both electron-acceptor and electron-donor substituents was effected under catalysis by palladium or nickel complexes.__________Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 12, 2004, pp. 1831–1835.Original Russian Text Copyright © 2004 by Beletskaya, Neganova, Veits. 相似文献
16.
Michael addition of 5,11-dihydrodibenz[b,e][1,4]oxazepines to acrylonitrile gave 5,11-di-hydrodibenz[b,e][1,4]oxazepine-5-propionitriles, which were converted to the corresponding methyl 5-propionates. Mild alkaline hydrolysis of these esters furnished the key intermediates, the 5,11-dihydrodibenz[b,e] [1,4]oxazepine-5-propionic acids. In the preferred procedure, these propionic acids were cyclized to the tetracyclic ketones in yields of 60-90%, by the action of one equivalent of trifluoroacetic anhydride in benzene. When ring C was involved in cylcization, 1,2-dihydro-3H,7H-quino[8,1-cd][1,5]benzoxazepin-3-ones were obtained, and when ring A was involved, 1,2-dihydro-3H,8H-quino[1,8-ab] [4,1]benzoxazepin-3-ones were formed. With 1c , both modes of cyclization were observed. In an alternative procedure that gave lower yields, the propionic acids were first converted to the corresponding acid chlorides, and these were cyclized by means of anhydrous stannic chloride; as anticipated, the products by this method were identical with those obtained via the trifluoroacetic anhydride method. Several reactions of these tetra-cylcic ketones, e.g., their ease of oxime formation, and dehydrogenation to the α,β-unsaturated ketones, are described. The α,β-unsaturated ketones do not form oximes. The structures assigned to the ketones are based on interpretations of their pmr, uv, and ir spectra. These assignments were confirmed by an X-ray analysis of a single crystal of one representative ketone, 2b ; the X-ray study was also useful in indicating the thermodynamically preferred conformation of 2b . The structures of all the other compounds followed from similar spectral interpretations. The mass spectra of a few compounds are also discussed. 相似文献
17.
Mironov V. F. Petrov R. R. Shtyrlina A. A. Gubaidullin A. T. Litvinov I. A. Musin R. Z. Konovalov A. I. 《Russian Journal of General Chemistry》2001,71(1):67-74
According to the NMR, IR, and high-resolution mass spectra, the major products of the reactions of 5,6-dibromo-2-chlorobenzo[d]-1,3,2-dioxaphosphole 2,2-dichloride with arylacetylenes are 4-aryl-6,7-dibromo-2-chloro-5,6-benzo[e]-1,2-oxaphosphorin-3-ene 2-oxides. The steric structure of one of the hydrolysis products, 2-hydroxy-6,7-dibromo-4-phenyl-5,6-benzo[e]-1,2-oxaphosphorin-3-ene 2-oxide, was studied by single crystal X-ray diffraction. 相似文献
18.
V. A. Tartakovsky I. E. Filatov A. M. Churakov S. L. Ioffe Yu. A. Strelenko V. S. Kuz’min G. L. Rusinov K. I. Pashkevich 《Russian Chemical Bulletin》2004,53(11):2577-2583
Treatment of 2- and 4-amino-3-(tert-butyl-NNO-azoxy)pyridines with nitrating agents (N2O5or NO2BF4) afforded the first representatives of pyridoannelated 1,2,3,4-tetrazine di-N-oxides, viz., pyrido[2,3-e][1,2,3,4]tetrazine 1,3-dioxide (9), 7-nitropyrido[2,3-e][1,2,3,4]tetrazine 1,3-dioxide (10), and pyrido[3,4-e][1,2,3,4]tetrazine 2,4-dioxide (11). These compounds were studied by 1H, 13C, and 14N NMR spectroscopy. The 1:1 complex of compound 10 with benzene was studied by X-ray diffraction analysis.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2471–2477, November, 2004. 相似文献
19.
V. A. Osyanin V. Y. Nakushnov Y. N. Klimochkin 《Chemistry of Heterocyclic Compounds》2011,47(6):755-757
The previously unknown heterocyclic system naphtho[1,2-e]pyrazolo[5,1-b][1,3]oxazine was synthesized by the condensation of 1-dimethylaminomethyl-2-naphthols with bromopyrazoles. It is proposed
that the highly reactive o-methylenequinone of the naphthalene series is formed as an intermediate. 相似文献
20.
S. B. Strashnova A. I. Stash P. V. Strashnov O. V. Koval’chukova B. E. Zaitsev 《Russian Journal of Inorganic Chemistry》2011,56(6):868-874
Nine complexes of copper(II), cobalt(II), Ni(II), and Zn(II) chlorides with naphtho[1,2,-c][1,2,5]oxadiazol-9-ol (HL1), naphtho[1,2-c][1,2,5]thiadiazol-9-ol (HL2), and naphtho[1,2-c][1,2,5]selenadiazol-9-ol (HL3) have been synthesized, isolated in the crystalline state, and studied by physicochemical methods. The composition of the
complexes in solutions as been determined and their stability constants have been calculated from spectrophotometric data.
The electronic structures of the ligands and complexes have been calculated by quantum-chemical methods. The crystal and molecular
structure of HL2 has been determined by X-ray crystallography. 相似文献