Diphenyl palladium chloride/dichloride

Bis[4-methoxyphenyl] tellurium, obtained from 4-methoxybenzene and tellurium tetrachloride and reduction of the resultant bis[4-methoxyphenyl] tellurium dichloride, was converted to methyl 4-methoxybenzoate in 99% yield1. Methyl benzoate was similarly obtained from diphenyl tellurium in yields higher than 90%. These reactions can be carried out with catalytic amounts of palladium(II) chloride when copper(II) chloride is used as an oxidant1. 

Acetylenes react with arenetellurolates to form aryl vinyl tellurides. The vinyl groups in vinyl aryl telluriums are converted to vinyl carboxylic acids by carbon monoxide in the presence of stoichiometric amounts of palladium dichloride or diacetate " The yield and the product distribution is influenced by the reaction time, the CO pressure, the presence or absence of lithium chloride or triethyl amine, and the concentration of palladium salt. Diphenyl tellurium was converted to benzoic acid Hexyl phenyl tellurium formed only benzoic acid and no heptanoic acid. ... 

Treatment of the diamide 77 with dibutyltin dichloride affords the 2,2-bis(2-[4(/ ),5(5)-diphenyl-1,3-oxazolinyl])propane 78, while successive reaction of 77 with mesyl chloride and aqueous ethanolic sodium hydroxide yields the diastereomer 79 <96TI3649>. The (+)- and (-)-forms of the chiral oxazoline 80 were used as ligands for palladium catalysed allylic amination reactions thus the acetate 81 and benzylamine gave the optically active amine 82 in excellent enantiomeric excess <97JOC55Q8>. The enantioselective catalytic alkylation of aldehydes RCHO (R = n-heptyl, Ph, cyclohexyl or PhCH=CH) with allyluibutyltin in the presence of chiral bis(oxazolinyl)zinc complexes, c.g., 83, leads to alcohols 84 in 40 6% enantiomeric excess <97TL145>. 

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

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