PdCl

Na PdCl + HCHO + 3NaOH —> Pd -f- HCOONa + 4NaCl + 2HisO... [Pg.949]

Extensive studies on the Wacker process have been carried out in industrial laboratories. Also, many papers on mechanistic and kinetic studies have been published[17-22]. Several interesting observations have been made in the oxidation of ethylene. Most important, it has been established that no incorporation of deuterium takes place by the reaction carried out in D2O, indicating that the hydride shift takes place and vinyl alcohol is not an intermediate[l,17]. The reaction is explained by oxypailadation of ethylene, / -elimination to give the vinyl alcohol 6, which complexes to H-PdCl, reinsertion of the coordinated vinyl alcohol with opposite regiochemistry to give 7, and aldehyde formation by the elimination of Pd—H. [Pg.22]

Treatment of 7r-allylpalladium chloride with CO in EtOH affords ethyl 3-butenoate (321)[284]., 3, y-Unsaturated esters, obtained by the carbonylation of TT-allylpalladium complexes, are reactive compounds for 7r-allyl complex formation and undergo further facile transformation via 7r-allylpalladium complex formation. For example, ethyl 3-butenoate (321) is easily converted into 1-carboethoxy-TT-allylpalladium chloride (322) by the treatment with Na PdCL in ethanol. Then the repeated carbonylation of the complex 322 gives ethyl 2-... [Pg.64]

Carbonyiation of butadiene gives two different products depending on the catalytic species. When PdCl is used in ethanol, ethyl 3-pentenoate (91) is obtained[87,88]. Further carbonyiation of 3-pentenoate catalyzed by cobalt carbonyl affords adipate 92[89], 3-Pentenoate is also obtained in the presence of acid. On the other hand, with catalysis by Pd(OAc)2 and Ph3P, methyl 3,8-nonadienoate (93) is obtained by dimerization-carbonylation[90,91]. The presence of chloride ion firmly attached to Pd makes the difference. The reaction is slow, and higher catalytic activity was observed by using Pd(OAc) , (/-Pr) ,P, and maleic anhydride[92]. Carbonyiation of isoprcne with either PdCi or Pd(OAc)2 and Ph,P gives only the 4-methyl-3-pentenoate 94[93]. [Pg.437]

Butyl-5-methyl 2-Bromo-5-methylacetanilide l-(Tri-n-butyl-stannvl)hexyne, (1) Pd(PPh,)4, (2) PdCl lCHjCN) 81,77 [1]... [Pg.22]

Acetaldehyde [75-07-0] can be obtained by the Wacker process, ia which a homogeneous CuC —PdCl system is used for the oxidation. [Pg.433]

Phenylpyrazole, upon reaction witii PdCl, forms tiie bis-adduct (1-Phpz)2 PdCl2 (73IC1216 75AJC1259), whichaflerprolongedreaction withPdCl " forms... [Pg.222]

The metals are obtained from the metallic phase of the sulphide matte or the anode slime from electrolytic refining of nickel. In the traditional process for the platinum metals, their separation was facilitated by their solubility in aqua regia and convertibility into PdCl - or PtCl - salts. Nowadays, substantial amounts are obtained using solvent extraction. [Pg.175]

PdF - PdCl - PdBrI PtFf Ptci - PtBr - Ptii ... [Pg.183]

PdCls(AsEt3)]-,5, 1123 AsPdC23H16F602 [Pd(hfacac)(AsPh3)]+, 5,1114 AsPdC32H24N2PS2... [Pg.269]

PdCl(AsMe3)(n-Ct)2lrCl,(PMe2Ph) 5. 1162 PdAs2C6H18Cl2 PdCl2(AsMe3)2, 5, 1161 PdAs2C7FT18CI4... [Pg.491]

Pd(S2C2H2)2,2,621 5,1148 PdC4H CIN302 PdCl(MeCN)2(N02), 6, 372 PdC4H6Cl2N2... [Pg.492]

PdCl,(MeNCH,CH2NMt CHXH2), 5, 1116 PdC4H14Cl2N202 PdCI2(DMF)2.6. 248 PdC6H14S2 Pd(SPr)2,5. 1136 PdC H14S4... [Pg.492]

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