Palladium 7? -Pantolactone

Cinchonidine modified catalysts, though, have been effectively used for several other enantioselective hydrogenations. Platinum-cinchonidine catalysts have been used for the hydrogenation of the a ketolactone, 36, to D-pantolactone (37) in 35% ee at complete conversion (Eqn. 14.26) while palladium-cinchonidine catalysts have been used for the enantioselective dehydrohalogenation of a,a-dichloro-2-benazapinone (38) (Eqn. 14.27) and the hydrogenation of (E) a phenylcinnamic acid (39) to (S) 2, 3-diphenylpropionic acid (40) in a 44% ee (Eqn. 14.28). ... [Pg.338]

Paal-Knorr pyrrole palladium diacetate palmitic add pantolactone... [Pg.209]

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