Palladium complexes hydrolysis

Palladium, polymethylenebis(diphenylphosphine)-bis(thiocyanato)-linkage isomers, 1, 185 Palladium, tetraammine-tetrachloropalladate history, 1, 2 Palladium, tetrachloro-crystal structure, 1, 16 Palladium, tris(dinitrogen)-synthesis, 1,28 Palladium complexes a,(5-dione dioximates electrical properties, 6, 143 acetylacetone hydrolysis, 2,379 alkylperoxo... 

Hydrolysis of the ester forms adipic acid, used to manufacture nylon—6. Carbonylations of nitroaromatics are used to synthesize an array of products including amines, carbamates, isocyanates, ureas and azo compounds. These reactions are catalyzed by iron, ruthenium, rhodium and palladium complexes. For example, carhonylation of nitrobenzene in the presence of methanol produces a carbamate ... 

The complexes can be obtained from the reaction of a Rh1 complex with 02 (equation 5),37 from the reaction of a Com-superoxo complex with a reduced metal (equation 6),38 from the acid hydrolysis of a platinum-peroxo complex3 (equation 7) or from the reaction of potassium superoxide with rhodium (equation 8)40 or palladium complexes.41... 

The polymer of methyl methacrylate (MMA) is known as Perspex. It is a clear transparent glasslike material with high hardness, resistance to fracture, and chemical stability. The conventional route, as shown by reaction 4.10, involves the reaction between acetone and hydrocyanic acid, followed by sequential hydrolysis, dehydration, and esterification. This process generates large quantities of solid wastes. An alternative route based on a homogeneous palladium catalyst has recently been developed by Shell. In this process a palladium complex catalyzes the reaction between propyne (methyl acetylene), methanol, and carbon monoxide. This is shown by reaction 4.11. The desired product is formed with a regioselectivity that could be as high as 99.95%. 

Scheme 3 provides a specific example of the enzymatic hydrolysis outlined in Scheme 1. The substituted allylic acetate is hydrolyzed with a lipase from Pseudomonas fluorescens in a phosphate buffer in the presence of 5 mol% palladium complex.

Due to the experimental finding that in hydrolysis of Kharasch s ethylene-palladium complex with D2O the resulting acetaldehyde does not contain any deuterium [20], intermediate 5 now undergoes a hydride transfer according to eqs. (19) and (20). 

Palladation of the t- butylimines of aromatic aldehydes (86) followed by insertion of acrylonitrile into the resulting complexes (87) yields intermediates of type (88), which on heating undergo electrocyclic ring-closure to isoquinolines (91). 2 Alternatively insertion of styrene into the palladium complexes followed by hydrolysis to the carboxaldehydes, and methylimine formation, yields intermediates (90), which on treatment with mercury (II) acetate are converted into N-methylisoquinolones (89). 103... 

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