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1.
Shagun L. G. Ermolyuk L. P. Sarapulova G. I. Voronkov M. G. 《Russian Journal of Organic Chemistry》2004,40(6):766-768
Oxidation of 2-chloro-1-phenylethane-1,1-dithiol with bromine, iodine, and elemental sulfur, as well as under UV irradiation, leads to formation of 1,4-bis(chloromethyl)-1,4-diphenyl-2,3,5,6-tetrathiane in 50–95% yield. Oxidation of the same substrate with selenium dioxide gives 1,5-bis(chloromethyl)-1,5-diphenyl-2,4-dithia-3-selenapentane-1,5-dithiol. On heating to 60°C, the latter loses selenium to afford 1,4-bis-(chloromethyl)-1,4-diphenyl-2,3-dithiabutane-1,4-dithiol. 相似文献
2.
Yu. S. Spiridonova A. S. Balueva D. B. Krivolapov I. A. Litvinov E. I. Musina A. A. Karasik O. G. Sinyashin 《Russian Chemical Bulletin》2013,62(11):2487-2494
A condensation of bis(hydroxymethyl)arylphosphines with 3- and 4-aminobenzonitriles leads to the corresponding 3,7-diaryl-1,5-bis(cyanophenyl)-1,5-diaza-3,7-diphosphacyclooctanes. Acyclic (aryl)bis[N-(2-cyanophenyl)aminomethyl]phosphines are formed in the case of 2-aminobenzonitrile. Molecular and crystalline structure of the compounds obtained was studied by X-ray diffraction analysis. 相似文献
3.
Methyl propiolate, formaldehyde, and various acyclic amines were assembled in one-pot into a series of 1,5-diaza-2,6-cyclooctadiene-3,7-dicarboxylates in moderate to good yields. This multiple-component reaction benefits from operational simplicity as well as good material economy. 相似文献
4.
Igor V. Shevchenko Peter G. Jones Axel Fischer Reinhard Schmutzler 《Heteroatom Chemistry》1992,3(2):177-180
The oxidation of the 1,3-diaza-4,6-diphosphorine 1 with tetrachloroorthobenzoquinone 2 led, unexpectedly, to the formation of 1,5-dimethyl-2,2-bis(dimethyl-amino)-4,4,4,4-bis-(tetrachloro-o-phenylenedioxa)-1,5-diaza-2,4-λ4, λ6-diphosphorinane-6-one 4 , containing two phosphorus atoms of opposite formal charge and different coordination number. The X-ray crystal structure analysis of 4 revealed the presence of a six-membered ring with an unusual conformation. 相似文献
5.
M. C. Aversaw P. Bonaccorsi P. Giannetto B. Beagley D. A. Leigh R. Pritchard A. M. Truscello 《Journal of heterocyclic chemistry》1992,29(2):317-320
The study of the molecular geometry of 1,5-bis(3,5-dimethyl-2-hydroxybenzyl)-1,5-diazocan-2,6-dione (2) as determined by X-ray analysis is reported and compared with that of cyclodi-β-alanyl (3). Interestingly there are 1.5 molecules of 2 in the asymmetric unit, showing the two conformations (1 twist-boat- and 0.5 chair-type) with two parallel aromatic rings (from alternate twist-boat conformers) sandwiching the eight-membered ring of the centrosymmetric chair-type conformation. The twist-boat is shown by pmr spectroscopy to be the only significantly populated conformer at low temperature in deuteriodichloromethane solution. 相似文献
6.
A new class of dithiostannanes and dithiogermanes have been prepared from 1,1'-binaphthyl-2,2'-dithiol and 3,3'-bis(trimethylsilyl)-1,1'-binaphtho-2,2'-dithiol. While reduction of 4-butyl-4-chloro-3,5-dithia-4-stanna-cyclohepta[2,1-a;3,4-a']dinaphthalene to the corresponding tin hydride was unsuccessful, 4-tert-butyl-3,5-dithia-4-germa-cyclohepta[2,1-a;3,4-a']dinaphthalene and 4-tert-butyl-2,6-bis(trimethylsilyl)-3,5-dithia-4-germa-cyclohepta[2,1-a;3,4-a']dinaphthalene were obtained by reduction of the parent germanium chlorides with NaBH(4) and LiBH(4), respectively. Kinetic constants for hydrogen transfer to a primary alkyl radical were measured for both germanium hydrides. Reduction of alpha-halo carbonyl compounds by these germanium hydrides occurs with moderate ee values (up to 42%), while hydrogermylation of methyl methacrylate occurs with low selectivity (<3/1) for the former hydride but high selectivity (>10/1) for the latter. 相似文献
7.
8.
Dibenzo[e,k]-2,3-bis(hydroxyimino)-1,4-dithia-7,10-diaza-2,3,8,9-tetrahydrocyclododecine (H2L) has been prepared from 1,2-bis(o-mercaptoanilino) ethane ( 4 ) and (E,E)-dichloroglyoxime. A mononuclear complex with a metal: ligand ratio of 1:2 has been isolated for cobalt(III). The CoIII complex of H2L has been prepared with L′ = 2,6-lutidine, and with a chlorine ion as axial ligands. In addition to that, the synthesis of a new cobalt complex which contains BF2+ bridges is achieved with the bis(E,E)-dioxime ligand. The trinuclear complex of this CoIII complex has been obtained by the reaction of BF2+ bridged CoIII complex with Pd[bis(benzonitrile)]Cl2. The structures of these complexes and (E,E)-dioxime were identified by using elemental analysis, 1H and 13C-NMR, IR and MS spectral data. 相似文献
9.
Andrey V. Zibarev Alexey O. Miller Yuri V. Gatilov Georgii G. Furin 《Heteroatom Chemistry》1990,1(6):443-453
The title compounds were obtained by the reaction of 1-aryl-3-trimethylsilyl-1,3-diaza-2-thiaallenes with dichloromonosulfane or 1-aryl-4-(1-phtalimidyl)-1,3-diaza-2,4-dithia-1,2-butadienes in the presence of CsF. The latter route also afforded nonsymmetric derivatives. In contrast, the reaction of N,N,N′,N′-tetrakis(trimethylsilyl)diaminosulfane with S,S-dichloro-N-aryliminosulfuranes (1:2) led to 1,3-bis(aryl)-1,3-diaza-2-thiaallenes and cyclotetra(azathiene). As shown by the X-ray structure analysis, the molecule of the title compound with Ar = Ph is planar, with configuration of the azathiene chain being similar to that of poly(azathiene) (SN)x. The MNDO calculations indicate that most of the π-MOs of this compound, including the frontier ones, are delocalized throughout the whole molecule. The data obtained confirm the possibility of creating molecular wire for molecular electronic devices on the basis of extended acyclic azathienes. An attempt to synthesize more extended compounds than the title ones resulted in spontaneous shortening of their azathiene chains. 相似文献
10.
N. N. Makhmudiyarova G. M. Kiyamutdinova E. S. Meshcheryakova A. G. Ibragimov U. M. Dzhemilev 《Russian Journal of Organic Chemistry》2016,52(10):1419-1426
An efficient procedure has been developed for the synthesis of 3-aryl-3,4-dihydro-2H-1,5,3-benzodithiazepines, 4-aryl-2,6-dithia-4-azabicyclo[5.3.1]undeca-1(11),7,9-trienes, and 4,10,16-triaryl-2,6,8,12,14,18-hexathia-4,10,16-triaza-1,7,13(1,4)-tribenzenacyclooctadecaphanes by samarium-catalyzed cycloaminomethylation of benzenedithiols with N,N-bis(methoxymethyl)anilines. 相似文献
11.
Reductive dehalogenation of dichloride
with magnesium affords the new stable diazacyclooctatetraene (1,5-diazocine)
. There is strong evidence for the intermediate formation of a 2, 6-diaza-4,8 - dicyanosemibullvalene
. 相似文献
12.
The reaction of 1-[1,2-bis(carbomethoxy)ethyl]aziridine with ethane-1,2-dithiol leads to 1.8-bis[1,2-bis(carbomethoxy)ethylamino]-3,6-dithiaoctane. Condensation with phthalic and terephthalic acid dichloride gives 9,10-benzo-8, 11-dioxo-7,12-bis[1,2-bis(carbomethoxy)ethyl]-1,4-dithia-7,12-diazacyclotetradec-9-ene and 9,12-benzo-8,13-dioxo-7,14-bis[1,2-bis(carbomethoxy)ethyl]-1,4-dithia-7,14-diazacyclohexadeca-9,12-diene, respectively, while condensation with formaldehyde gives 7,9,18,20-tetrakis[1,2-bis(carbomethoxy)ethyl]-1,4,12,15-tetrathia-7,9,18.29-tetraazacyclodocosane. The corresponding disulfone is formed in the oxidation of 9,10-benzo-8,11-dioxo-7,12-bis[1,2-bis(carbomethoxy) ethyl]-1,4-dithia-7,12-diazacyclotetradec-9-ene with 30% hydrogen peroxide.See [1] for Communication 1.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1563–1565, November, 1988. 相似文献
13.
The reactions of 1,1-diphenylethene, 1,1-bis(4-chlorophenyl)ethene, 1,1-bis(4-methylphenyl)ethene, and 1,1-bis(4-methoxyphenyl)ethene with 3,5-diacetyl-2,6-heptanedione in the presence of manganese(III) acetate in acetic acid at 80° yielded 4,6-diacetyl-8,8-diaryl-1,3-dimethyl-2,9-dioxabicyclo[4.3.0]non-3-enes (41-48%), 5-acetyl-2,2-diaryl-6-methyl-2,3-dihydrobenzo[b]furans (20–21%), 3-acetyl-5,5-diaryl-2-methyl-4,5-dihydrofurans (5–10%), and benzophenones (3–7%). Similarly, the reactions of 1,1-diarylethenes with dimethyl 2,4-diacetyl-1,5-pentanedioate or diethyl 2,4-diacetyl-1,5-pentanedioate gave the corresponding 4,6-bis(alkoxycarbonyl)-8,8-diaryl-1,3-dimethyl-2,9-dioxabicyclo[4.3.0]non-3-enes in moderate yields. 相似文献
14.
This paper deals with the synthesis of a new lateral macrobicyclic cryptand 10. Condensation of 2.6-di(bromomethyl)pyridine with 3-(n-tosylamino) methyl propionate in the presence of anhydrous K2CO3 at room temperature gave 5 which was hydrolyzed to 6. Reaction of the latter with excess sulfonyl chloride afforded 2,6-di(4′-chloroformyl-2′-tosyl-2′-azabutyl)pyridine (7). Pentaaza-1,5,13,17,28-dithia-20,25-tricyclo [15,5,5,17,11]-octacosa-7,9,11 (28)-triene(10) has been synthesized by the following sequence of reactions: Condensation of 7 with 1,7-diaza-4,10-dithia-dodecane (3) by high dilution technique in toluene-THF at room temperature afforded 8 which was reduced by diborane in THF solution to give 9. Treatment of 9 with sodium anthracene in monoglyme produced 10. 相似文献
15.
《Journal of Coordination Chemistry》2012,65(5):485-492
Two new Schiff-base compounds, 1,6-bis(4-dimethylaminobenzyl)-2,5-diaza-1,5-hexadiene (bdh), 1,4-bis(4-dimethylaminobenzyl)-2,3-diaza-1,3-butadiene (bdb), and a silver complex of the latter ([Ag2(bdb)3(NO3)2]·H2O, 1) have been synthesized and characterized. The crystal structure of complex 1 was determined. 1 is a dinuclear complex, with the silver ions lying in coordination tetrahedra formed by two nitrogen atoms from the bdb ligands and two oxygen atoms from the nitrate anions. The fluorescence properties of bdh and bdb were studied; the fluorescence of bdb was quenched by the addition of silver ions, indicating that it is a potential fluorescent reagent for the analysis of silver. 相似文献
16.
Saeedeh Sepehrikia Donya Arefi Alireza Shams 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2014,88(13):2462-2465
Fluorescence quantum yield of two novel compounds—dibenzo[c,k]-1,2-dithia-6,9-diazacyclododecane-5,10-dione (1) and dibenzo[c,k]-1,2-dithia-6,9-diaza-7-methylcyclododecane-5,10-dione (2) was studied by Williams method using anthracene as a reference. 相似文献
17.
V. R. Akhmetova N. N. Murzakova G. R. Khabibullina N. F. Galimzyanova 《Russian Journal of Applied Chemistry》2011,84(2):225-229
Possibility of obtaining water-soluble N- and N,N′-coordinated adducts by reacting 3,7-dithia-1,5-diazabicyclo[3.3.0]octane with methyl iodide and Brønsted (HCl, HBr) and Lewis (AlCl3) acids was examined. The fungicidal activity of 3,7-dithia-1,5-diazabicyclo[3.3.0]octane and its water-soluble adducts with hydrobromide and methyl iodide against a number of microscopic fungi affecting cultivated plants and various materials was studied. 相似文献
18.
V. V. Kastron A. M. Kats G. Ya. Dubar R. M. Zolotoyabko 《Chemistry of Heterocyclic Compounds》1978,14(11):1236-1240
4,4-Disubstituted 1,4-dihydropyridines (I) are brominated with bromine in chloroform to give 2,6-bis(bromomethyl)-4,4-disubstituted 1,4-dihydropyridines (II), whereas 2,6-bis(dibromomethyl)-4,4-disubstituted 1,4-dihydropyridines (III) are obtained in the case of bromination of I in acetic acid. The bromine atoms in II and III are labile and readily undergo nucleophilic substitution.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1519–1524, November, 1978. 相似文献
19.
IntroductionRecentresearcheffortshavebeendevotedtothestudyoflatetransitionmetalcomplexesasmodelsystemsforthepolymerizationoroligomerizationofethylene .1 3ThemostnotableachievementshavebeendonebyBrookhart,4 Bennett,5andGibsongroups .6,7Theyinde pendentlyrepor… 相似文献
20.
新型2,6-双(3,5-二取代吡唑基-1-羰基)吡啶的合成 总被引:9,自引:0,他引:9
报道了四种吡唑衍生物和它们四种新型的杂环酰胺衍生物的合成 ,它们是 3 ,5 二甲基吡唑 (1) ,5 甲基 3 苯基吡唑(2 ) ,3 ,5 二苯基吡唑 (3 ) ,5 甲基 3 二茂铁基吡唑 (4 ) ,2 ,6 双 (3 ,5 二甲基吡唑基 1 羰基 )吡啶 (5 ) ,2 ,6 双 (5 甲基 3 苯基吡唑基 1 羰基 )吡啶 (6) ,2 ,6 双 (3 ,5 二苯基吡唑基 1 羰基 )吡啶 (7)和 2 ,6 双 (5 甲基 3 二茂铁基吡唑基 1 羰基 )吡啶 (8) .并对它们进行了元素分析 ,FT IR ,1HNMR和13 CNMR等波谱分析 . 相似文献