共查询到20条相似文献,搜索用时 171 毫秒
1.
Sh. F. Gizatullin I. M. Raigorodskii V. M. Kopylov 《Russian Journal of General Chemistry》2012,82(2):220-225
A series of (hydroxymethyl)hydroxyphenyldimethylsiloxanes of linear and branched structures were synthesized by the reaction
with formaldehyde in aqueous alkaline medium of organosilicon phenols of general formula R′[Si(CH3)2O]
n
[Si(CH3)RO]
m
SiMe2R′, where R′ was 4-hydroxy-3-methoxyphenylpropyl, R was methyl or 4-hydroxy-3-methoxyphenylpropyl. The structure and composition
of the siloxanes were confirmed by elemental analysis, NMR and IR spectroscopy. The homocondensation of (hydroxymethyl)hydroxyphenyldimethylsiloxanes
at the hydroxymethyl groups was investigated. A possibility of reaction of (hydroxymethyl) hydroxyphenyldimethylsiloxanes
with phenol-formaldehyde resin to form copolymers was demonstrated. 相似文献
2.
E. O. Chukhajian A. A. Khachatryan A. R. Gevorkyan H. A. Panosyan 《Chemistry of Heterocyclic Compounds》2009,45(4):426-429
In aqueous base medium p-bis{3-[N-(3-chlorobuten-2-yl)pyrrolidinio (piperidinio or morpholinio)]-propyn-1-yl}benzene dichlorides undergo a two-way
dehydrochlorination-cyclization reaction to form benzo[5,6-a:5′,6′-c]bis(2,2-tetramethylene- or -2,2-pentamethylene-4-methylisoindolinium) and benzo-[5,6-a:5′,6′-c]bisspiro(4-methylisoindoline-2,4′-morpholinium) dichlorides.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 546–549, April, 2009. 相似文献
3.
Tetradentate Schiff-base carboxylate-containing ligands, bis(2-pyridylmethyl)amino-5-valeric acid (Hpmva) and bis(2-pyridylmethyl)amino-6-caproic
acid (Hpmca), react with copper(II) perchlorate to give rise to the carboxylated bridged chain complexes {[Cu(μ-pmva)(H2O)](ClO4)}n (1) and {[Cu(μ-pmca)(H2O)](ClO4)}n (2). These complexes have been characterized by X-ray crystallography, spectroscopic, and variable-temperature magnetic susceptibility
measurements. In 1 and 2, each of the copper(II) ions exhibit CuN3O2 coordination environments with the three nitrogen atoms of the ligand and one oxygen atom belonging to the carboxylate group
of an adjacent molecule occupying the basal position and a water molecule coordinated in the axial position. The electronic
spectra of the complexes are significantly affected by the coordination geometry. Magnetic susceptibility measurements indicate
that complexes exhibit very weak ferromagnetic interactions. 相似文献
4.
S. M. Ramsh A. G. Ivanenko V. A. Shpilevyi N. L. Medvedskiy P. M. Kushakova 《Chemistry of Heterocyclic Compounds》2005,41(7):921-928
Alkaline hydrolysis of 3-tert-butyl-7,7-bis(hydroxymethyl)-3,4-dihydro-2H-thiazolo[3,2-a][1,3,5]-triazin-6(7H)-one can occur in three directions: with cleavage of the tetrahydrotriazine ring, with cleavage of the
thiazolidine ring, and also with opening of both rings. Depending on the process conditions, either the hydrolysis product
corresponding to the first direction or the hydrolytic decomposition products corresponding to the second and third directions
can be obtained in preparative quantities. Hydrolysis of 3,3′-di-tert-butyl-3′,4′-dihydro-2′ H-spiro[(perhydro-1,3-oxazine)-5,7′-thiazolo[3,2-a][1,3,5]triazin]-6′-one in (NH4)2CO3 solution occurs in two steps: in the first step, cleavage of the tetrahydrotriazine ring occurs; and in the second step,
opening of the perhydrooxazine ring occurs.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 1089–1097, July, 2005. 相似文献
5.
G. A. Abakumov V. K. Cherkasov A. V. Krashilina I. L. Eremenko S. E. Nefedov 《Russian Chemical Bulletin》1998,47(11):2262-2270
New mononuclear 3,6-di-tert-butyl-o-benzosemiquinone complexes of copper(1) with bis(diphenylphosphine) ligands were synthesized: (DBSQ)Cu(dppe) (1) (DBSQ=3,6-di-tert-butyl-o-benzosemiquinone and dppe=1,2-bis(diphenylphosphino)ethane), (DBSQ)Cu(dppp) (2) (dppp=1,3-bis(diphenylphosphino)propane), (DBSQ)Cu(dppn) (3) (dppn=2,2′-bis(diphenylphosphino)-1,1′-binaphthyl), and (DBSQ)Cu(dppfc) (4) (dppfc=1,1′-bis(diphenylphosphino)ferrocene). The compositions and structures of complexes1–4 were characterized by elemental analysis and electronic absorption, IR, and ESR spectroscopy. The molecular structures of
complexes3 and4 were established by X-ray diffraction analysis. The reactions of elimination and replacement of neutral ligands in the coordination
sphere of the complexes were studied by ESR spectroscopy.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2333–2340, November, 1998. 相似文献
6.
Salts ofN-(β-hydroxyalkyl)-N′-hydroxydiazeneN-oxides, RCH(OH)CH2N(O)=NO− M+ (R=Me, Pri, or But; and M=Li, Na, K, Ag, NH4, or Me4N), were prepared. Their alkylation with alkyl halides R′X (X=Cl, Br, or I) and dimethyl sulfate was studied. Generally, alkylation
afforded mixtures ofN-(β-hydroxyalkyl)-N′-alkoxydiazeneN-oxides RCH(OH)CH2N(O)=NOR′ andO-alkyl-N-(β-hydroxyalkyl)-N-nitrosohydroxylamines RCH(OH)CH2N(NO)OR′.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1996–2001, October, 1998. 相似文献
7.
Iron (II) complexes of 1-alkyl-2-(arylazo)imidazoles (p-R-C6H4-N=N-C3H2NN-1-R′, R = H (a), Me (b), Cl (c) and R′ = Me (1/3), Et (2/4) have been synthesized and formulated astris-chelates Fe(RaaiR′)
3
2+
. They are characterized by microanalytical, conductance, UV-Vis, IR, magnetic (polycrystalline state) data. The complexes
are low spin in character,t
2g
6
(Fe(II)) configurations. 相似文献
8.
Masoud Salavati-Niasari Noshin Mir 《Journal of inclusion phenomena and macrocyclic chemistry》2007,59(3-4):223-230
New square-planar bis(macrocyclic)dicopper(II) complexes containing phenylene bridges between 16-membered pentaaza macrocyclic
subunits have been synthesized via in-situ one pot template condensation reaction (IOPTCR) of aromatic nitrogen-nitrogen linker (R = 1,4-phenylenediamine; benzidine;
4,4′-diaminodiphenylmethane; 4,4′-diaminodiphenylether; 4,4′-diaminodiphenylsulfone), formaldehyde, bis(1,3-diaminopropane)copper(II)
perchlorate and 1,3-dibromopropane in a 1:4:2:2 molar ratio results in the formation of new series of binuclear copper(II)
complexes; 1-phenyl- (1); 1,1′-phenyl- (2); 1,1′-diphenylmethan- (3); 1,1′-diphenylether- (4); 1,1′-diphenylsulfone- (5) bis(1,3,7,11,15-pentaazacyclohexadecane)copper(II)), {[Cu([16]aneN5)]2R}(ClO4)4″. The formation of the macrocyclic framework and the mode of bonding of the complexes have been confirmed by data obtained
from elemental analyses, UV-visible, FT-IR, 1H-NMR, electronic spectral studies, conductivity and magnetic susceptibility measurements. These bis(macrocyclic) complexes
catalyzed efficiently the selective oxidation of tetrahydrofuran into tetrahydrofuran-2-one and a small amount of tetrahydrofuran-2-ol
and 4-hydroxybutyraldehyde using dil. H2O2 as the oxidant. 相似文献
9.
Seung Hoon Choi Ji Young Ryu Jun Yong Lee Young Chan Myoung Cheal Kim Youngmee Kim Byung Ho Song 《应用有机金属化学》2004,18(7):369-370
Four ligands of 1,3‐bis(4‐pyridyl)propane and two water molecules are coordinated to the zinc(II) atom so that the coordination geometry closely resembles a trans‐N4O2 octahedral environment. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
10.
Goran N. Kaluđerović Tanja M. Vasiljević Mila D. Laušević Akmal S. Gaballa Tibor J. Sabo 《Monatshefte für Chemie / Chemical Monthly》2009,140(5):553-557
Abstract The electrospray mass spectrometric (ESI–MS) behavior of the complexes trans-dichloro(ethylenediamine-N,N′-di-3-propionato)platinum(IV), trans-dibromo(ethylenediamine-N,N′-di-3-propionato)platinum(IV), dichloro(ethylenediamine-N,N′-di-3-propionic acid)platinum(II), tetrachloro(O,O′-di-n-butyl-ethylenediamine-N,N′-di-3-propanoate)platinum(IV), chlorotribromo(O,O′-di-n-butyl-ethylenediamine-N,N′-di-3-propanoate)platinum(IV), and dichloro(O,O′-di-n-butyl-ethylenediamine-N,N′-di-3-propanoate)platinum(II), with the formulae trans-[PtCl2(eddp)] (1), trans-[PtBr2(eddp)] (2), [PtCl2(H2eddp)] (3), [PtCl4(Bu2eddp)] (4), [PtBr3Cl(Bu2eddp)] (5), and [PtCl2(Bu2eddp)]·H2O (6), is reported. The deprotonated molecular ions or halide adducts are usually observed. ESI–MS data demonstrate the usefulness
of the method for efficient characterization of metal complexes in solution.
Graphical Abstract
相似文献
11.
A. I. Konovalov I. S. Ryzhkina L. I. Murtazina A. P. Timosheva R. R. Shagidullin A. V. Chernova L. V. Avvakumova S. G. Fattakhov 《Russian Chemical Bulletin》2008,57(6):1231-1238
Bis(hydroxymethyl)phosphinic acid and melamine were shown by FTIR and UV spectroscopy to form the salt (melafen), whose cations
and anions involving water molecules can be joined into supramolecular structures due to electrostatic interactions and hydrogen
bonds. The conductometry, dielcometric titration, and dynamic light scattering methods showed that melafen in water and chloroform
in a concentration range of 10−10–10−4 mol L−1 involving the solvent structures exist as supramolecular polymeric nanostructures, whose size and properties change nonlinearly
depending on the melafen concentration.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1207–1214, June, 2008. 相似文献
12.
Kuznetsov R. M. Balueva A. S. Litvinov I. A. Gubaidullin A. T. Nikonov G. N. Karasik A. A. Sinyashin O. G. 《Russian Chemical Bulletin》2002,51(1):151-156
The reaction of bis(hydroxymethyl)phenylphosphine with 4,4"-diaminodiphenylmethane in DMF afforded 1,1",5,5"-bis[methylenedi(p-phenylene)]di(3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane) (1) whose structure was established by X-ray diffraction analysis. Sulfurization and oxidation of macrocyclic tetraphosphine 1 gave rise to products 2 and 3, respectively, compound 3 being obtained as a stable hexahydrate. The reaction of bis(hydroxymethyl)phenylphosphine with bis(4-N-methylaminophenyl)methane in DMF followed by sulfurization yielded monocyclic bis{methylenedi[p-phenylene(N-methyl)aminomethyl]}di(P-phenyl)phosphine sulfide (4). 相似文献
13.
《Mendeleev Communications》2022,32(5):622-623
Bis(hydroxymethyl)(2-pyridyl)- and bis(hydroxymethyl)-[(2-pyridyl)ethyl]phosphines on heating to 180 °C undergorearrangement leading to racemic P-chiral tertiary P-methyl-P-(hydroxymethyl)-containing phosphine oxides. The spontaneous self-resolution of these enantiomer mixtures during the crystallization was demonstrated. 相似文献
14.
I. M. Chung H. Y. Park S. C. Chun J. J. Kim A. Ahmad 《Chemistry of Natural Compounds》2007,43(4):417-421
Three new compounds, 4-hydroxymethylene-7-(9,9,13-trimethylcyclohexyl)-heptanyl-3′,7′,7′-trimethylcyclohexa-2′,4′-dien-1′-oate
(1), 1-(n-hexadec-7-enoxy)-6-(n-octadecanoxy)-β-D-glucopyranoside (2), and (Z)-12-hydroxy-9-octadecenoic acid-12-β-D-glucopyranoside (3), along with the known compound hexacosanoic acid (4), were isolated and identified from the rice hulls of Oryza sativa. Their structures were elucidated by 1D and 2D NMR spectroscopic techniques (1H-1H COSY, 1H-13C HETCOR, DEPT) aided by EIMS, FABMS, HRFABMS, and IR spectra.
Published in Khimiya Prirodnykh Soedinenii, No. 4, pp. 344–347, July–August, 2007. 相似文献
15.
M. Madesclaire V. P. Zaitsev J. V. Zaitseva S. Kh. Sharipova 《Chemistry of Heterocyclic Compounds》2007,43(10):1325-1332
A synthesis is reported for (4R,5R)-and (4S,5S)-4-hydroxymethyl-5-(4-nitrophenyl)oxazolidin-2-ones and (1′R,4R)-and (1′S,4S)-4-[hydroxy(4-nitrophenyl)methyl]oxazolidin-2-ones from (1R,2R)-and (1S,2S)-2-amino-1-(4-nitrophenyl)-1,3-propanediols. The effect of the experimental conditions on the formation of these compounds
was studied.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1562–1570, October, 2007. 相似文献
16.
Synthesis of Bis(2-Pyridylphosphino)Alkanes in Superbasic Medium and Their Hydroxymethyl Derivatives
Tatyana I. Fesenko Alia V. Shamsieva Elvira I. Musina Igor D. Strelnik Andrey A. Karasik Oleg G. Sinyashin 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1-3):63-65
Abstract Novel P-H-diphosphinoalkanes with pyridyl substituents at the phosphorus atoms have been obtained in good or moderate yields by the interaction of primary 2-pyridyl-phosphine with dichloroalkanes in superbasic medium. The formation of novel 1-(2-pyridyl)-1-phosphacyclopentane together with bis(2-pyridylphosphino)butane was observed as the result of the interaction of 2-pyridylphosphine and 1,4-dichlorobutane under the same reaction conditions. The reaction of the bis(2-pyridylphosphino)alkanes thus obtained with formaldehyde leads to the formation of the corresponding hydroxymethyl derivatives. 相似文献
17.
L. V. Batog V. Yu. Rozhkov E. V. Shatunova M. I. Struchkova 《Russian Chemical Bulletin》2008,57(1):165-169
Methods for the synthesis of 4-amino-4′-R-3,3′-(NNO)-azoxy-1,2,5-oxadiazoles (amino-azoxyfurazans) with 4-nitro-1,2,3-triazol-1-yl
and 1,2,3-triazolo[4,5-c]furazan-5-yl substituents (R) by cycloaddition of morpholinonitroethylene to 4′-amino-4-azido-3,3′-(ONN)-azoxyfurazan or
oxidative condensation of 3-R-4-aminofurazans with 4-trifluoroacetylamino-3-nitrosofurazan were elaborated. Related polycyclic
azo derivatives were also synthesized.
For preliminary communication, see Ref. 1.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 159–163, January, 2008. 相似文献
18.
O-Nitration of 4,4-bis(hydroxymethyl)-2-phenyl-2-oxazoline with conc. HNO3 in the presence of Ac2O was found to occur without ring-opening. Hydrolysis of the reaction products gives tris(hydroxymethyl)aminomethane derivatives.
For Part 3, see Ref. 1.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 812–814, April, 1999. 相似文献
19.
2,2-二羟甲基-1,3-丙二醇单缩醛的合成 总被引:2,自引:0,他引:2
引言2,2-二羟甲基-1,3-丙二醇(以下称季戊四醇)单缩醛是有机合成的重要中间体。我们曾用季戊四醇单缩醛与氢化钠及1,3-丙磺内酯反应合成了一系列含有1,3-二氧六环的磺酸盐型可断裂表面活性剂[1]。目前,有关季戊四醇单缩醛的文献报道极少。Conr... 相似文献
20.
M. P. Prigozhina P. V. Petrovskii L. G. Komarova A. L. Rusanov 《Russian Chemical Bulletin》1992,41(1):144-146
The previously unknown ansa-o-carboranylenecyclotriphosphazene was obtained in a 15% yield by the reaction of bis(hydroxymethyl)-o-carborane with hexachlorocyclotriphosphazene; its structure was confirmed by1H and31P NMR and IR spectroscopy methods and by mass spectrometry. The thermal properties of the obtained compound were studied.A. N. Nesmeyanov Institute of Heteroorganic Compounds, Russian Academy of Sciences, 117813 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 1, pp. 177–179, January, 1992. 相似文献