Titanium, dichloro

Titanocene dichloride ALDRICH Bis(cyclopentadienyl)titanium dichloride Titanium, dichloro-n-cyclopentadienyl- (8) Titanium, dichlorobis(r -2,4-cyclopentadienyl-1-yl)- (9) (1271-19-8)... 

HYDRO ALUM [NATION Dichlorobis-(cyclopcntadienyl)titanium. Dichloro-his(cyclopentadicnyl)zirconium. Lithium aluminum hydride-I)ichlorobis(cyclo-pentadienyi)zirconium. Borane-Di-metliyl sulfide. 

Bis(2-chloroethoxy)ethane Ethane, 1,2-bis(2-chloroethoxy)- (112-26-5), 68, 227 Bis(cyclopentadienyl)titanium dichloride Titanium, dichloro-x-cyclopentadienyl- ... 

HYDROALUMINATION Dichlorobis-(cyclopentadienyl)titanium. Dichloro-bis(cyclopentadienyl)zirconium . Lithium aluminum hydride-Dichlorobis(cyclo-pentadienyl)zirconium. Borane-Di-methyl sulfide. 

Titanium, dichloro-di-pi-cyclopentadienyl-. See Titanocene dichloride Titanium dioxide... 

Synonyms Bis (cyclopentadienyl) dichIorotitaniurn Biscyclopentadienyltitanium dichloride Biscyclopentadienyltitanium (IV) dichloride Dichlorobis (1,3-cyclopentadiene) titanium Dichlorobiscyclopentadienyl titanium Dichlorodicyclopentadienyltitanium (Dichlorodi-pi-cyclopentadienyltitanium Dichlorotitanocene Dicyclopentadienyidichlorotitanium Dicyclopentadienyltitanium dichloride Titanium, dichloro-di-pi-cyclopentadienyl- Titanium ferrocene Titanocene Titanocene dichloride... 

CASRN 3209-22-1 molecular formula C6H3CI2NO2 FW 192.00 Photolytic. An aqueous solution containing 2,3-dichloronitrobenzene and a titanium dioxide (catalyst) suspension was irradiated with UV light (X >290 nm). 2,3-Dichloro-l,5-dinitrophenol formed as the intermediate product. Continued irradiation caused further degradation yielding carbon dioxide, water, hydrochloric and nitric acids (Hustert et al, 1987). 

Monomers 1 and 2 were also used as comonomers with dimethyl dialkanoates and monomers containing furan rings, for the synthesis of copolyesters by bulk polycondensations, in the presence of titanium isopropoxide or tetra-butyl-1,3-dichloro-distannoxane. In general, the biodegradability of the copolyesters of 1 decreased with increasing difuran dicarboxylate content, and copolymers... 

Difluorobis(2,4-pentanedionato)titanium(IV) is a bright yellow solid, dichloro-... 

Very few complexes have been examined. It is known that (Pc)TiCl can be converted t (Pc)TiO.152 Dichloro(phthalocyaninato)titanium(lV) can be synthesized via equation (27). Th reaction is a convenient one, inasmuch as the titanium(III) furnishes the electrons necessary t convert phthalonitrile to the phthalocyanine anion.153... 

The use of a Lewis acid (e.g., friethylfluoroborate, zinc chloride, stannous chloride, titanium chloride, iron(m)chloride) and other reagents (e.g., iodine, trimethylsilane, trifluoiomethane-sulfonylsilane) have also been recommended. Exhaustive lists of catalysts and conditions can be found in reviews devoted to carbohydrates [5-7], or to general organic chemistry [27,28], However, one can add the new catalyst, which has been introduced for the smooth formation of p-methoxybenzylidene acetals and p-methaxy-phenylmethyl methyl ether [29], namely 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), and has been applied very recently [30] to the synthesis of isopropylidene mixed acetals. 

Butyl hypochlorite, 55 of phenols to quinones Benzoyl /-butyl nitroxide, 28 2,3-Dichloro-5,6-dicyano-l, 4-benzoqui-none, 104 Periodic acid, 238 of phosphorus compounds Dimethyldioxirane, 120 of selenium compounds Potassium permanganate, 258 of sulfides to sulfoxides and sulfones /-Butyl hydroperoxide-Dialkyl tar-trate-Titanium(IV) isopropoxide, 51 ra-Chloroperbenzoic acid, 76, 112 Dimethyldioxirane, 120 of thiols to sulfur compounds Trimethylsilyl chlorochromate, 327... 

Methyllithium-Methylaluminum bis(2,4,6-tri-/-butylphenoxide), 203 Trichloromethyltitanium, 216 Triisopropoxymethyltitanium, 213 Addition reactions which can be used to prepare secondary alcohols only Dichloro(cyclopentadienyl)methyl-titanium, 219... 

Dichlorobis(trifluoromethanesulfonato)-titanium(IV), 102 Dichloro(cyclopentadienyl)methyl-titanium, 219... 

A full account5 describes the enantioselective carbonyl-ene reaction of glyoxylate esters catalyzed by a binaphthol-derived chiral titanium complex that is potentially useful for the asymmetric synthesis of a-hydroxy esters of biological and synthetic importance.6 The present procedure is applicable to a variety of 1,1-disubstituted olefins to provide ene products in extremely high enantiomeric purity by the judicious choice of the dichloro or dibromo chiral catalyst (see Table). In certain glyoxylate-ene reactions involving removal of a methyl hydrogen, the dichloro catalyst... 

The low valent titanium species obtained from TiCU and LAH has been used46 to generate dichloro-carbene from CCI4. Finally, it has been shown that certain dihalocyclopropanes dissociate thermally47 or photochemically48 to generate the carbene. Such procedures may be useful under special circumstances. 

Simple alkylation can be accomplished by use of trialkylaluminums which, with Lewis acids, afford 1-C-alkyl products such as 90, available in 72% yield by reaction between di-O-acetyl-6-deoxy-D-galactal and trimethylaluminum in the presence of titanium tetrachloride in dichloro-methane at —78 °C.109 Importantly, the reaction can also be applied to 1-alkylglycals, also with high stereoselectivity, so that the doubly substituted compound 91 can, for example, be made by allylation of tri-O-acetyl-l-C-methyl-D-glucal. Its C-l epimer is available by C-methylation of the 1-C-allylglucal.110... 

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