Bis ethenyl

Bis(2-diisopropylaminoethyl) Disulfide Bis(2-diisopropylaminoethyl) Sulfide Bis(2-fluoroethyl) 2-Chloroethylamine Bis(2-fluoroethyl)methylamine Bis(2-hydroxyethyl) Sulfide Bis(2-hydroxyethyl) Thioether Bis(2-hydroxyethyl)amine Bis(2-hydroxyethyl)methylamine Bis(2-propenyl) Sulfide Bis(bromomethyl) Ether Bis(chloromethyl) Ether Bis(cyclohexyl)carbodiimide Bis(ethenyl)sulfone Bis(trichloromethyl) Carbonate Bis(/3-bromoethyl) Sulfide Bis(/3-chloroethyl)ethylamine Bis(/3-Chloroethyl)methylamine Bis(/3-chloroethylthio)ethane Bis(/3-mercaptoethyl) Sulfide... 

The interesting zwitterionic compound (39) with the cationic component a butadien-2-yl cation was obtained by reaction of l,4-di(t-butyl)butadiyne with 2 mol of di(r-butyl)aluminium hydride, with the structure being established by X-ray analysis.80 The reactions of the l,2-diferrocenyl-3-(methylthio)cyclopropenylium ion with carbanions derived from active methylene compounds were investigated.81 Products were derived by ring opening of the cyclopropene ring after the initial carbanion addition. The bis(ferrocenylethynyl)phenylmethylium cation (Fc-C=C-)2C+Ph (Fc = ferrocenyl) was prepared 82 This cation proved to be much less stable than its bis-ethenyl analogue (Fc-CH=CH-)2C+Ph. 

The complex l,l -bis(ethenyl -pyridyl)ferrocene was also co-crystallized with 1,3-dihydroxybenzene (resorcinol) and 1,3,5-trihydroxybenzene (phloroglucinol)" to form hydrogen-bonded molecular clips (see Figure 12), which lock the conformation of the organometallic fragment in a dipolar arrangement, a prerequisite for NLO molecules. 

Bis (ethenyl) sulfone. See Divinyl sulfone S- [1,2-Bis (ethoxycarbonyl) ethyl]-0,0-dimethyl phosphorodithioate S-1,2-Bis (Ethoxycarbonyl) ethyl-0,0-dimethyl thiophosphate. See Malathion... 

Synonyms Bis (ethenyl) sulfone Ethene, 1,1 -sulfonylbis- Sulfone, divinyl 1,1-Sulfonylbisethane Vinyl sulfone Classification Monomer Empirical C4H6O2S Formula CH2=CHS02CH=CH2 Properties Colorless clear liq. sol. in water,... 

Furalazine, Acetylfuratrizine, Panfuran-S. Heating nitrovin in butanol or dimethylformamide at 100—130°C affords furalazine, 6-[2-(5-nitro-2-furanyl)ethenyl]-l,2,4-triazine-3-amine (34). An improved synthesis originates with 5-nitro-2-furancarboxaldehyde and acetone, proceeds through 4-(5-nitro-2-furanyl)-3-buten-2-one followed by a selenium dioxide oxidation to the pymvaldehyde hydrate, and subsequent reaction with aininoguariidine (35). Furalazine, acetylfuratrizine (36), and the A[-A/-bis(hydroxymethyl) derivative, Panfuran-S, formed from the parent compound and formaldehyde (37), are systemic antibacterial agents. 

Methyl-6-aminobenzoselenazole when treated with 3-penten-2-one gave by a simple Doebner-Miller type reaction the 2,7,8-trimethylselenazoloquinoline 43 in 18.6% yield, that is the angular product and not the linearly annelated one was formed. Its structure was confirmed by the coupling constant in proton NMR (71JHC693). Selenazoloquinoline 43 can be converted via the 6-methylpyridium salt in the reaction with 4-dimethylaminobenzaldehyde to 2,6-dimethyl-7,9-bis(l-(4-dimethylaminophenyl)-2-ethenyl)selenazolo[5,4-/]quinolinium iodide 44 (Ar = 4-dimethylaminophenyl). This dye exhibited two absorption maxima between 500 and 600 nm (72MI2). 

Benzene, 1,1 -(2,2-dibromocyclopropyli-dene)bis- [ 17343-74-7], 32 Benzene, diethenyl-, polymer with ethenyl-bcnzene, aminomcthylatcd [non-registrable], 95... 

The crystal structure of [Fe(C5H4R)2][Ni(mnt)2] ([Fe(C5R)2]+ = l,l -bis[2-(4-(methylthio)-( )-ethenyl]ferrocenium) is based on segregated chains of cations and anions. The stacks of anions are isolated by the cations and consist of a packing of dimers. In this compound yT decreases cooling, which indicating the presence of dominant AF interactions [66]. 

Dimitrakopoulos, C. D. Afzali-Ardakani, A. Furman, B. Kymissis, J. Purushothaman, S. 1997. Trans-trans-2,5-bis-[2- 5-(2,2 -bithienyl) ethenyl] thiophene Synthesis, characterization, thin film deposition and fabrication of organic field-effect transistors. Synth. Met. 89 193-197. 

A jS-silyl stabilized vinyl cation, the l-bis(trimethylsilyl)methyl-2-bis(trimethylsilyl) ethenyl cation (32) was investigated by dynamic 13C NMR spectroscopy (Fig. 6).55... 

Te-Li exchange in bis(2-arylethenyl)tellurides (run 15). To a solution of bis-[2-(p-tolyl) ethenyl] telluride (0.361 g, 1 mmol) in THE (4 mL) at -78°C under nitrogen, a solution of n-BuLi (0.91 mL, 2.1 mmol, 2.42 M solution in hexane) was added dropwise. After 20 min of stirring at this temperature, DMF (0.2 mL, 2.58 mmol) was added. The temperature was raised to room temperature and stirred for 1 h, then diluted with ethyl acetate (30 mL) and washed with water (3x10 mL). The organic layer was separated, dried with MgS04 and the solvent removed under vacuum. Elution with hexane removed dibutyl telluride, and elution with ethyl acetate gave a low-m.p. solid. Yield 0.175 g, 60% (characterized as the semi-carbazone m.p. 108.4-109.4°C). 

Ethenyl-imidazol781 23,0 g (0,34 mol) Imidazol, 3,0 g (0,03 mol) Kalium-imida/olid, 0,5 g Zinkoxid und 1,0 g gepulvcrtcs Kaliumhydroxid werden in 100 ml trockenem 1,4-Dioxan verteilt und in einem Schuttel-autoklaven bei 130 mit Ethin behandclt, bis kein Ethin mehr aufgenommcn wird. Danach wird destillativ aufgearbeitet Ausbeute 20,0 g (62%) Sdp. 80°/10Torr (1,33 kPa). 

In 1-substituierten Nitro-imidazolen konnen 2-, 4- oder 5-Methyl-Gruppen mit Dialkoxy-dimethylamino-methan (z. B. Dimethoxy-dimethylamino-1074, Dicyclohexyloxy-dimethylami-no-1073, Bis-[dimethylamino]-tert.-butyloxy-methan1143) zu 2-, 4- oder 5-(2-Dimethylamino-ethenyl)-Gruppen umgesetzt werden. Auf diese Weise konnen z. B. 5- (2-Dime thy lamino-ethe-nyl)-l-methyl-4-nitro-101A und 2- (2-Dimethylamino-ethenyl)-1 -methyl-5-nitro-imidazol1013,1143 (weitere Beispiele s.1143) hergestellt werden. 

Die Wahl des Losungsmittels bestimmt, welches Produkt bei der Cyclisierung von 1,2-Diamino-benzol mit Tris-[tert.-butylthio]-cyclopropenylium-perchlorat gebildet wird. In Methanol ent-steht 2-(1,2-Bis-[tert.-butylthio]-ethenyl)-benzimidazol (77%, tiber ein Allyl-Kation), im apro-tischen Dimethylformamid in einer inneren Michael-Addition 3,4-Bis-[tert.-butylthid -IH-l, 5-benzodiazepin (63% roh 100%)189. 

Ethenyl-l-( l-jod-2-nitro-ethylj-cyclohexan 86,5 1,2-Bis- l-jod-2-nitro-ethyf]-cvclohexan < 5... 

Butadien reagiert mit Nitro-methan in Gegenwart von Bis-[triphenylphosphan]-dichlo-ro-palladium] zu einem Gemisch aus 3-(Nitromethyl)-l,7-octadien (1%), 10-Ethenyl-9-nitro-1,6,14-pentadecatrien (10,5%), 9-Nitro-9-(2,7-octadienyl)-l,6,ll,16-heptadecate-traen (45,5%) und 9-Nitro-l,6,11,16-heptadecatetraen (5%) ... 

Anstclle der Amine + Katalysator konnen anch die gesondert hergestellten Lithium-amide eingesetzt werden, so z.B. bei der Oberfiihrung von Ethenyl- und Allyl-phosphanen in (2-Amino-alkyl)-phos-phane in siedendem Toluol (maBige bis gute Ausbeuten)7. 

Eine cyclisierende Hydroaminierung besonderer Art erfolgt bei der Reaktion von Bis-[2-phenyl-ethenyl]-sulfon mit N-Methyl-hydroxylamin. Es bildet sich 3,5-Diphenyl-4-me-thyl-tetrakydro-1,4-thiazin-1,1-dioxid (34%), moglicherweise fiber ein intermediates N-Oxid4. 

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