Disclosed is a method for preparing a 1,3-dicarbonyl compound based on a metal hydride/palladium compound system. The method includes the following steps: suspending a palladium compound and a metal hydride in a solvent under the protection of nitrogen, then adding an electron-deficient olefin compound, reacting same at 0° C.-100° C. for 0.3 to 10 hours, then adding a saturated ammonium chloride aqueous solution to stop the reaction, and then subjecting same to extraction, evaporation until dryness, and column chromatography purification to obtain the 1,3-dicarbonyl compound. The hydride and palladium compound catalysts used by the present invention are reagents easily obtained in a laboratory. Compared to a common hydrogen hydrogenation method, the method is easier to operate, and has a higher safety, mild conditions, and a high reaction yield.

Disclosed is a method for preparing a 1,3-dicarbonyl compound based on a metal hydride/palladium compound system. The method includes the following steps: suspending a palladium compound and a metal hydride in a solvent under the protection of nitrogen, then adding an electron-deficient olefin compound, reacting same at 0 C.-100 C. for 0.3 to 10 hours, then adding a saturated ammonium chloride aqueous solution to stop the reaction, and then subjecting same to extraction, evaporation until dryness, and column chromatography purification to obtain the 1,3-dicarbonyl compound. The hydride and palladium compound catalysts used by the present invention are reagents easily obtained in a laboratory. Compared to a common hydrogen hydrogenation method, the method is easier to operate, and has a higher safety, mild conditions, and a high reaction yield.

Bi-functional cobalt-containing catalysts useful for making stereospecific compounds and compositions, along with methods of making, and uses thereof in the syntheses of optically pure -lactones from aldehydes and ketene are described. Precursors, intermediates, compositions, and particular features of the use if the compositions, such as high enantiomeric selectivity, high yield and low mole percent of catalyst useful are provided.

Bi-functional cobalt-containing catalysts useful for making stereospecific compounds and compositions, along with methods of making, and uses thereof in the syntheses of optically pure -lactones from aldehydes and ketene are described. Precursors, intermediates, compositions, and particular features of the use if the compositions, such as high enantiomeric selectivity, high yield and low mole percent of catalyst useful are provided.