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Aluminum, triphenyl

Groups attached to aluminum or boron in this way have the expected increased electrophilic and decreased nucleophilic reactivities. For example, the complex of aluminum triphenyl and phenyl lithium lacks the usual Grignard-like reactivity of phenyl lithium towards-carbonyl compounds.800... [Pg.158]

Dypnone has been prepared by the action of sodium ethoxide,1 aluminum bromide,2 phosphorus pentachloride,3 aluminum triphenyl,4 zinc diethyl,5 calcium hydroxide,6 anhydrous hydrogen chloride,5,7 aluminum chloride,4 and aluminum terf.-butoxide8 on acetophenone. It has been prepared by the action of aniline hydrochloride on acetophenone anil followed by treatment with hydrochloric acid.9 The preparation of aluminum ferJ.-butoxide has been described8,10 (p. 8). The procedure described is a modification of that by Adkins and Cox.8... [Pg.41]

They also found that mixtures of bis-(cyclopentadienyl)-titanium dichloride and aluminum triphenyl or bis-(cyclopentadienyl)-titanium diphenyl and aluminum triethyl were active catalysts, and presumably formed similar, bridged complexes. Interestingly, the hydrocarbon substituent attached to aluminum became an end group in the polymer. [Pg.69]

The polarity of the Al-C bond allows easy derivatization of the five-coordinate aluminum alkyls by alkane elimination (Figure 9). For example, Salen aluminum alkyls LAlMe could be converted to dimeric or polymeric Salen aluminum phosphinates [LAl 02P(H)Ph ] 98 (n = 2 or oo, depending on the Salen ligand backbone)98,99 by reaction with phenyl phosphinic acid, Salen aluminum siloxides LA10SiPh3 by reaction with triphenyl silanol,96 or Salen aluminum alkoxides LAIOR by reaction with an alcohol.100... [Pg.274]

Replacement of an allylic hydroxyl without saturation or a shift of the double bond was achieved by treatment of some allylic-type alcohols with triphenyliodophosphorane (PhjPHI), triphenyldiiodophosphorane (PhsPIj) or their mixture with triphenyl phosphine (yields 24-60%) [612]. Still another way is the treatment of an allylic alcohol with a pyridine-sulfur trioxide complex followed by reduction of the intermediate with lithium aluminum hydride in tetrahydrofuran (yields 6-98%) [67 J]. In this method saturation of the double bond has taken place in some instances [675]. [Pg.78]

The NMR spectra and dipole moments of l,2,4-triazole-3-thiones support their meso-ionic formulation (227). For example, the compound (227, R = Me, R = R = Ph) has a dipole moment of 9.1 D in dioxan solution. The effect of solvent polarity upon the ultraviolet and visible spectra of the triphenyl derivative (227, R = R = R = Ph) has been reported but no direct interpretation was made. The meso-ionic l,2,4-triazole-3-thiones (227) form hydrochlorides (234, R = H, X = Cl) and methiodides (234, R = Me, X = I) they yield 1,2,4-triazolidine-3-thiones by lithium aluminum hydride reduction. ... [Pg.49]

Phenyl azide-Aluminum chloride, 240 Haloboration Boron tribromide, 43 Halogenation Boron tribromide, 43 Tetrabutylammonium tribromide, 287 Hydroacylation Dicarbonyl(nitrosyl)triphenyl-phosphinecobalt, 101 Hydrofluorination... [Pg.354]

Triphenyl- 1,2,4-butanetrione oxime in chloroform with hydrogen chloride cyclized in 70-75% yield to the purple 2,4,5-triphenyl-3f/-pyrrol-3-one 1-oxide (61) (30JA1590), along with an isoxazoline derivative. The pyrrlone was reduced by lithium aluminum hydride in ether [76JCS(P 1)2259] to l-hydroxy-2,3,5-triphenylpyrrole 62. [Pg.118]

Reduction of amides is an important preparative method for the synthesis of primary amines. Reducing agents used for this purpose include lithium aluminum hydride, sodium borohydride, triphenyl-phosphine (Staudinger reduction), and thiols. In the present case it is important to consider the compatibility of the reduction system with the carboxylic and methanesulfonic acid functions. Platinum and palladium arc often used for catalytic reduction. [Pg.37]

Other ingredients that may be found in smokeless powders include camphor, carbazole, cresol, diethyleneglycoldinitrate (DEGDN), dimethylse-bacate, dinitrocresol, di-normal-propyl adipate, 2.4-dinitrodiphenylamine, PETN, TNT, RDX, acaroid resin, gum arabic, synthetic resins, aluminum, ammonium chlorate/oxalate/perchlorate, pentaerythritol dioleate, oxamide, lead carbonate/salicylate/stearate, magnesium oxide, sodium aluminum fluoride, sodium carbonate/bicarbonate, petrolatum, dioctylphthalate, stannic oxide, potassium cyrolate, triphenyl bismuth. [Pg.66]

Patent literature reports also on halogen-free composition for PS foams, using phosphorus compound, such as RP, triphenyl phosphate, diphenyl cresyl phosphate, APP or diphenyl phosphate, and metal hydroxide such as magnesium or aluminum hydroxide.88 It is reported that PS foams containing a mixture of EG (6-10 wt%), inorganic compound (5-10 wt%) and RP, triphenyl phosphate (TPP) or 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOP)), and chalk compounds (5-10 wt%)89 or containing EG and phosphorus compounds such as RP, triphenylphosphate diphenyl cresyl phosphate, APP, melamine phosphate, resorcinol diphenyl phosphate, and dimethyl methylphosphonate in suitable amounts90 fulfills DIN 4102-B2 requirements. [Pg.775]

THphenyl Telluronium Chloride1 A 500 ml, round-bottom flask fitted with a magnetic stirrer and a pressureequalizing addition funnel is flushed with nitrogen and flame-dried. 300 ml of anhydrous toluene and 15.66 g (58 mmol) of tellurium tetrachloride are placed in the flask and a solution of 5.0 g (19.4 mmol) of triphenyl aluminum in 50 ml of anhydrous toluene are placed in the addition funnel. The flask is cooled in ice/water and the triphenyl aluminum solution is added dropwise over 2 h with stirring. The mixture is then rapidly filtered, the yellow solid is washed with 300 ml of anhydrous diethyl ether, the solid is added to 250 ml of water, the slurry is heated until most of the material has dissolved, the hot solution is filtered, and the filtrate is cooled to precipitate the product yield 3.8 g (50%) m.p. 246°. [Pg.680]

Treatment of 2,3-diphenyl-5-benzylidene-4-thiazolidinone with aluminum chloride (3.5 mol) in benzene results (perhaps unexpectedly) in the formation (70%) of 2,3,5-triphenyl-5-benzyl-4-thiazolidinone, by 1,2-addition to the exocyclic bond.139... [Pg.102]

NAZAROV CYCLIZATION Aluminum chloride. Benzylchlorobis(triphenylphos-phine)palladium. Bis(acetonitrile)-dichloropalladium(II). Boron trifluoride etherate. Tetrakis(triphenyl-phosphine)paIladium. [Pg.662]

REDUCTION, REAGENTS Bis(triphenyl-phosphine)copper tetrahydroborate. Borane-Pyridine. Calcium-Methylamine/ ethylenediaminc. Chlorobis(cyclopenta-dienyl)tetrahydroboratozirconium(IV). Chromium(II)-Amine complexes. Copper(0)-lsonitrile complexes. 2,2-Dihydroxy-l, 1-binaphthyl-Lithium aluminum hydride. Di-iododimethylsilane. Diisobutyl-aluminum 2,6-di-/-butylphenoxide. Diisobutyl aluminum hydride. Dimethyl sulfide-Trifluoroacetic anhydride. Disodium tetracarbonylferrate. Lithium-Ammonia. Lithium-Ethylenediamine. Lithium bronze. Lithium aluminum hydride. Lithium triethylborohydride. Potassium-Graphite. 1,3-Propanedithiol. Pyridine-Sulfur trioxide complex. [Pg.270]


See other pages where Aluminum, triphenyl is mentioned: [Pg.118]    [Pg.61]    [Pg.127]    [Pg.69]    [Pg.107]    [Pg.118]    [Pg.61]    [Pg.127]    [Pg.69]    [Pg.107]    [Pg.224]    [Pg.69]    [Pg.71]    [Pg.361]    [Pg.56]    [Pg.102]    [Pg.499]    [Pg.113]    [Pg.201]    [Pg.287]    [Pg.405]    [Pg.376]    [Pg.224]    [Pg.306]    [Pg.215]    [Pg.21]    [Pg.678]    [Pg.1044]    [Pg.577]    [Pg.499]    [Pg.376]    [Pg.54]    [Pg.56]   
See also in sourсe #XX -- [ Pg.46 , Pg.107 ]

See also in sourсe #XX -- [ Pg.46 , Pg.107 ]

See also in sourсe #XX -- [ Pg.45 , Pg.107 ]

See also in sourсe #XX -- [ Pg.46 , Pg.107 ]

See also in sourсe #XX -- [ Pg.46 , Pg.107 ]

See also in sourсe #XX -- [ Pg.46 , Pg.107 ]




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