Dichlorobis

Triflates of titanium and tin are effective catalysts for various condensations of carbonyl compounds [I2I, 122, 123, 124, 125] Claisen and Dieckmann type condensations between ester functions proceed under mild conditions in the presence of dichlorobis(trifluoromethanesulfonyloxy)titaiiiuin(rV) and a tertiary amine (equations 59 and 60) These highly regio- and stereoselective condensations were used successfully m the synthesis of carbohydrates [122]... [Pg.964]

The only prominent antitumor tetravalent platinum complex so far is iproplatin (102). In vitro it has been shown to cause interstrand DNA-breaking and cross linking. Free radical scavengers inhibit these effects. The complex is less neurotoxic and less nephrotoxic than cisplatin. Its synthesis begins with hydrogen peroxide oxidation of cis-dichlorobis(isopropvlamine) platinum (100) to the dimethylacetamide complex 101. The latter is heated in vacuum to liberate iproplatin [25]. [Pg.17]

A degassed suspension of lhe halo compound 14 and an alkyne (1.2 equiv) in Et3N (0.1-0.2 mol) was stirred in the presence of dichlorobis(triphenylphosphane)palladium(II) (0.02 equiv) and coppcr(I) iodide (0.04 equiv) at 20 C for 20 h. EtOAc was added and the mixture was washed with H20 and brine the organic phase was dried (MgSOi) and evaporated to yield the product. [Pg.412]

Cobalt, dichlorobis(AvY -dimethyl-1,2-ethanediamine)-chloride hydrate isomerization, 1, 468 Cobalt, dich orobis(l,2-ethanediamine)-base hydrolysis, 1, 304 chloride anation, 1, 469 halogen exchange, 1, 468 chloride hydrate isomerization, 1, 468 isomers, 1,191 nitrate... [Pg.107]

Palladium, (diammine)bis(thiocyanato)-isomerism, 1, 185 Palladium, dichlorobis(amine)-substitution reactions stereochemistry, 1, 318 Palladium, dichlorobis(pyridine)-substitution reactions, 1, 314 Palladium, dinitritobis(triisopropylphosphine)-substitution reactions, I, 314 Palladium, ethylene-synthesis... [Pg.188]

Platinum, dichlorobis(dimethyl sulfide)-isomerization, 1, 318 trans-... [Pg.197]

Tin, bis(diethyldithiocarbamato)diphenyl-angular parameters, 1,57 Tin, bis(diethyldithiocarbonato)diiodo-angular parameters, 1,57 Tin, bis(diethyl dithiophosphate)diphenyl-stereochemistry, 1,59 Tin, bis(diethyldithiophosphonium)diiodo-angular parameters, 1, 57 Tin, chlorotris(tropolone)-stereochemistry, 1, 82 Tin, cyclopentadienyl-, 3, 218 Tin, dibromobis(ethyldithiocarbonato)-angular parameters, 1, 57 Tin, dichlorobis(ethyldithiocarbonato)-angular parameters, 1, 57 Tin, dimethylbis(acetylacetone)-structure, 1, 58... [Pg.235]

Dimethyl-I,l -biphenyl has been prepared by a wide variety of procedures, but few of these are of any practical synthetic utility Classical radical biarjl syntheses such as the Gomberg reaction or the thermal decomposition of diaroyl peroxides give complex mixtures of products m which 4,4 dimethyl-l.l -biphenyl is a minor constituent A radical process maj also be involved in the formation of 4,4 dimethyl-1, l -biphenyl (13%) by treatment of 4-bromotoluene with hydrazine hydrate 5 4,4 -Dimethyl-l,l -biphenyl has been obtained in moderate to good yield (68-89%) by treatment of either dichlorobis(4-methyl phenyl)tellurium or l,l -tellurobis(4-methylbenzene) with degassed Raney nickel in 2 methoxyethyl ether 6... [Pg.50]

A complex reaction takes place when dichlorobis(triphenylphosphine)-nickel (5) is treated with excess methylmagnesium bromide in ether. Detectable amounts of benzene, toluene, and biphenyl are formed, together with mixed phosphines. Nickel appears to be necessary for the substitution reaction since triphenylphosphine alone does not react with the Grignard reagent. [Pg.2]

Constable, E.C., Henney, R.P.G., Leese, T.A. and Tocher, D.A. (1990) Cyclometallation reactions of 6-phenyl-2,2 -bipyridine a potential C,N,N-donor analogue of 2,2 6, 2"-terpyridine. Crystal and molecular structure of dichlorobis (6-phenyl-2,2 -bipyridine)ruthenium(II). Journal of the Chemical Society, Dalton Transactions, (2), 443. [Pg.82]

II), and gold(III) perhaloaryl complexes with the ligand bis(diphenylphosphino) amine. Crystal and molecular structure of m-[bis(diphenylphosphino)amine] dichlorobis(pentafluorophenyl)digold... [Pg.168]

Jones, P.G. (1993) Crystal structure of tetra-n-butylammonium trans-dichlorobis(pentafluorophenyl)aurate (III), (C4H9)4N(Cl2Au(C6F5)2). Zcitschrift jur KristaUographie, 208(2), 362-365. [Pg.175]

See also in sourсe #XX -- [ Pg.964 ]

See also in sourсe #XX -- [ Pg.52 , Pg.417 ]

See also in sourсe #XX -- [ Pg.124 , Pg.125 ]

See also in sourсe #XX -- [ Pg.2 , Pg.76 , Pg.264 ]

See also in sourсe #XX -- [ Pg.12 , Pg.102 , Pg.103 , Pg.220 ]

See also in sourсe #XX -- [ Pg.2 , Pg.68 , Pg.130 ]

See also in sourсe #XX -- [ Pg.118 ]

See also in sourсe #XX -- [ Pg.121 , Pg.123 ]

See also in sourсe #XX -- [ Pg.2 , Pg.76 , Pg.264 ]

See also in sourсe #XX -- [ Pg.173 ]

See also in sourсe #XX -- [ Pg.173 ]

See also in sourсe #XX -- [ Pg.12 , Pg.102 , Pg.103 , Pg.220 ]

See also in sourсe #XX -- [ Pg.136 ]

See also in sourсe #XX -- [ Pg.293 ]

See also in sourсe #XX -- [ Pg.179 ]

See also in sourсe #XX -- [ Pg.292 ]

See also in sourсe #XX -- [ Pg.196 ]

See also in sourсe #XX -- [ Pg.111 ]

See also in sourсe #XX -- [ Pg.4 , Pg.997 ]

See also in sourсe #XX -- [ Pg.2 , Pg.76 , Pg.264 ]

See also in sourсe #XX -- [ Pg.151 ]

See also in sourсe #XX -- [ Pg.111 ]

See also in sourсe #XX -- [ Pg.280 , Pg.281 , Pg.282 , Pg.283 , Pg.284 , Pg.285 , Pg.286 , Pg.287 , Pg.288 , Pg.289 , Pg.290 ]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...