Benzene ethanol

Chloroform with acetic acid, acetone, benzene, ethanol, ethyl acetate, hexane, methanol or pyridine. Cyclohexane with acetone, benzene, carbon tetrachloride, ethanol or diethyl ether. 

Dimethyl formamide with benzene, ethanol or ether. 

Methyl ethyl ketone with acetic acid, benzene, ethanol or methanol. 

Depending on the electronic state of azafulvalene and the reaction conditions, simple nucleophiles such as amines or alcohols show a different behavior. Upon heating methanol reacted with azafulvalenes as electron-rich olefins by addition to the central double bond (64BSF2857 67LA155). Using the TAF 77 (Ar = Ph), the addition reaction in a neutral benzene-ethanol solution required several days to obtain a minor amount of 147, while the reaction proceeded rapidly in the presence of a catalytic amount of potassium hydroxide (79JOC1241). Tlie yellow-colored adduct 147 can be reconverted to the quinoid starting material by irradiation (Scheme 58). 

The extent of double-bond isomerization over homogeneous catalysts is influenced by choice of solvent. Saturation of the double bond in 4-(4-me-thoxyphenyl)-3-(2 nitro-4-methoxyphenyl)-l-pentene was achieved smoothly by reduction over RhCl(Ph3P)j in benzene wiihout any hydrogenation of the nitro function. If the solvent were benzene-ethanol, isomerization of the double bond to a conjugated position also occurred ihis styryl bond was inert to reduction under these conditions (77). 

Solvents can have a large influence on the extent of double-bond migration (6). The factors involved are complex as shown in the hydrogenation of methylenecyclohexane, 3-methylcyclohexene, and 4-methylcyclohexene to methylcyclohexane in benzene-ethanol, in peniane, and in ethanol over 5% Pd, 5% Pt, and 5% Rh-on-carbon. The amount of isomerized 2-methylcy-clohexene was measured ai 25% completion and, depending on the system,... 

Regardless of substrate and solvent, isomerization fell in the order 5% Pd-on-C 5% Rh-on-C > 5% Pt-on-C, and, regardless of substrate or catalyst, isomerization fell with solvent in the order ethanol > pentane > 1 1 benzene-ethanol. Benzene is effective as an isomerization inhibitor mixed with other solvents as well 1 20 benzene-acetone showed marked inhibition. Substituted benzenes are less effective than benzene. 

Iron porphyrins containing vinyl ligands have also been prepared by hydromet-allation of alkynes with Fe(TPP)CI and NaBH4 in toluene/methanol. Reactions with hex-2-yne and hex-3-yne are shown in Scheme 4. with the former giving two isomers. Insertion of an alkyne into an Fe(III) hydride intermediate, Fe(TPP)H, formed from Fe(TPP)Cl with NaBH4, has been proposed for these reactions. " In superficially similar chemistry, Fe(TPP)CI (present in 10 mol%) catalyzes the reduction of alkenes and alkynes with 200 mol% NaBH4 in anaerobic benzene/ethanol. For example, styrene is reduced to 2,3-diphenylbutane and ethylbenzene. Addition of a radical trap decreases the yield of the coupled product, 2,3-diphenylbutane. Both Fe(lll) and Fe(II) alkyls, Fe(TPP)CH(Me)Ph and [Fe(TPP)CH(Me)Ph] , were propo.sed as intermediates, but were not observed directly. ... 

Both polymers 10 and 11 are soluble in common organic solvents, melt without decomposition, and can be drawn into the fibers. Molecular weights of the polymers 10 and 11, determined by gel permeation chromatography with tetrahydrofuran as the eluant after purification by reprecipitation from benzene-ethanol, showed a broad monomodal molecular weight distribution. The degree of polymerization depends on particle size of sodium metal. Polymers with molecular weights of 23,000-34,000 are always obtained, if fine sodium particles are used. 

Organic solvent(s) No data Insoluble in alcohol Nitric acid, hot diluted Benzene, ethanol, diethyl ether,... 

C A pitch insoluble in benzene but soluble in benzene/ ethanol azeotrope 40 Consists almost entirely of aromatic fragments attached to phenol by methylene bridges. These fragments are larger than in fraction B as they contain polyaromatic groups. It has more oxygen functional groups than B. 

Contact with the following materials, containing combined hydrogen, is likely to cause fire or explosion acetic acid, ammonia, benzene, ethanol, hydrogen, hydrogen sulfide, methane cork, grease, paper, wax, etc. The carbon content further contributes to the observed reactivity [1]. Chloromethane reacts with explosive violence [2]. See Acetonitrile, above... 

A very powerful oxidant uncontrolled contact with aniline, benzene, ethanol, ether, nitrobenzene or phenol may cause explosion [1], Alkanes are slowly carbonised [2],... 

The individual polarographic characteristic of the analyzed compound is the potential El/2 at which the current strength equals 50% of its maximum value. The binary solvent benzene-methanol or benzene-ethanol is used. The amount of peroxide is proportional to the maximum strength of the electric current at peroxide concentration in solution lower than... 

Use the NIOSH web site to determine and compare the PEL, IDLH concentration, and TLV for ethylene oxide, benzene, ethanol, ethylene trichloride, fluorine, and hydrogen chloride. 

Figure 17 shows the chemical structures of anionic amphiphile sodium-1,2-bis (tetradecylcarbonyl)ethane-l-sulfonate (2Cj4SNa)[34] and poly(ethyleneimine)(PEI). A benzene/ethanol (9 1)(WV) solution of anionic amphiphile was spread on the pure water surface or the PEI-water solution (lxlO5 unit M in monomer unit, pH=3.2) surface at a subphase temperature, Tsp of 293 K. At this pH, ca. 70 % of nitrogen atom in PEI molecule was protonated[35]. Surface pressure-area(ji-A) isotherms were measured with a microprocessor controlled film balance system. 

To 24 ml acetic anhydride in 80 ml formic acid add 22 g 4,5 or 6 methoxy (or analog) tryptophan and reflux V2 hour. Concentrate to thick syrup on steam bath with vacuum and add slowly with stirring 180 ml water and let stand twelve hours at 0°. Filter, wash with 2% HC1 and water to get about 18 g N-formyl-methoxy-tryptophan (I) (recrystallize-benzene-ethanol). 10 g (1), 119 g polyphosphoric acid,... 

Absolute (100%) ethanol is often made by adding benzene to the ethanol -water binary azeotrope (two components), to make a ternary azeotrope (three components). This ternary alcohol-water-benzene (18.5 7.4 74.1) azeotrope comes over until all the water is gone, followed by a benzene-ethanol mixture. Finally, absolute ethanol gets its chance to appear, marred only slightly by traces of benzene. 

A modified rare earth catalyst (30) which is based on a polystyrene backbone as depicted in Scheme 4.15 can be applied even in neat water. It is attached via a hydrophobic oligomeric linker which creates a nonpolar reaction environment and acts as a surfactant for the substrates. The reaction of 4-phenyl-2-butanone with tetraallyltin in water using 1.6 mol% of the scandium catalyst (30) afforded the corresponding homoallylalcohol in a yield of 95%. Interestingly, when using other solvents (dichloromethane, acetonitrile, benzene, ethanol, DMF) the yields decreased drastically, indicating a much higher reaction rate in water [98]. 

Based on structurally similar compounds, hexachlorocyclopentadiene is expected to be soluble in benzene, ethanol, chloroform, methylene chloride, trichloroethylene, and other liquid halogenated solvents. 

NaBH4 is the more widely used reagent owing to the mild experimental conditions. The choice of solvent, or solvent mixture, and of neutral or basic media is governed by the further use of the tellurolate solution. Typical media are benzene/ethanol/aqueous NaOH,i MeOH or EtOH.i - i... 

Extraction of nanowires from mesoporous supports is important and desirable for their application as a building block for electronic devices and catalyst preparation. In addition, more detailed characterization of metal/alloy nanowires is available by their extraction from the sihca templates. Isolation of the Pt nanowires from mesoporous templates has also been tried by dissolving FSM-16 and HMM-1 with aqueous HF or NaOH solution, but the nanowires were readily decomposed into Pt aggregates. However, the Pt nanowires were successfully extracted as their original forms from the sihca templates using HF and [NBu4]Cl as a surfactant in a benzene/ethanol solution. It is reasonably implied that the extracted wires are... 

The polarity of a molecule is also important. Apolar substances, such as benzene, ethanol, diethyl ether, and many narcotic agents are able to enter biological membranes easily. By contrast, membranes are impermeable to strongly polar compounds, particularly those that are electrically charged. To be able to take up or release molecules of this type, cells have specialized channels and transporters in their membranes (see below). 

For radioassays, sections were milled to about 40 mesh, and then extracted successively with ethanol, benzene-ethanol and hot water. The... 

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