Use of sulfoxides as cocatalysts in the palladium-quinone-catalyzed 1,4-diacetoxylation of 1,3-dienes. An example of ligand-accelerated catalysis
摘要:
The use of sulfinyl quinones as cocatalysts in the palladium-catalyzed 1,4-diacetoxylation of 1,3-dienes improves the stereochemical outcome of the reaction by increasing the rate of the internal migration of the acetate nucleophile. A mechanism of the interaction between the sulfoxide and the intermediate (pi-allyl)palladium complex, based on H-1 NMR results, is proposed.
Use of sulfoxides as cocatalysts in the palladium-quinone-catalyzed 1,4-diacetoxylation of 1,3-dienes. An example of ligand-accelerated catalysis
摘要:
The use of sulfinyl quinones as cocatalysts in the palladium-catalyzed 1,4-diacetoxylation of 1,3-dienes improves the stereochemical outcome of the reaction by increasing the rate of the internal migration of the acetate nucleophile. A mechanism of the interaction between the sulfoxide and the intermediate (pi-allyl)palladium complex, based on H-1 NMR results, is proposed.