Abstract: Provided in the present invention is a method for preparing chiral alkyl compounds by the asymmetric hydrogenation reaction of iron complex catalysts catalysing olefins: using the disubstituted olefin shown in formula I as a raw material, atmospheric hydrogen as a hydrogen source, FeX2-8-OIQ complex as a catalyst, and a silane compound and acetonitrile as cocatalysts, and reacting for 12-24 hours under the action of a reducing agent to prepare the chiral alkyl compound shown in formula II. The method of the present invention has mild reaction conditions, simple operation, and high atom economy. In addition, the reaction does not require the addition of any other toxic transition metal (such as ruthenium, rhodium, and palladium), and has great practical application value in the synthesis of drugs and materials. The conversion rate of the reaction is also good, generally reaching >99%, and the enantioselectivity is also high, generally 70-99%.

Abstract: Provided in the present invention is a method for preparing chiral alkyl compounds by the asymmetric hydrogenation reaction of iron complex catalysts catalysing olefins: using the disubstituted olefin shown in formula I as a raw material, atmospheric hydrogen as a hydrogen source, FeX2-8-OIQ complex as a catalyst, and a silane compound and acetonitrile as cocatalysts, and reacting for 12-24 hours under the action of a reducing agent to prepare the chiral alkyl compound shown in formula II. The method of the present invention has mild reaction conditions, simple operation, and high atom economy. In addition, the reaction does not require the addition of any other toxic transition metal (such as ruthenium, rhodium, and palladium), and has great practical application value in the synthesis of drugs and materials. The conversion rate of the reaction is also good, generally reaching >99%, and the enantioselectivity is also high, generally 70-99%.

Abstract: The disclosure relates to a method and device for displaying logistics information, and computer readable storage medium. The method includes acquiring a logistics waybill identifier of at least one item from at least one e-commerce client that is installed on an operating system of a terminal and is configured to display a logistics page; acquiring logistics information corresponding to the logistics waybill identifier, wherein the logistics information indicates a logistics progress of the at least one item; aggregating the acquired logistics information of the at least one item; and displaying the aggregated logistics information in a preset display area provided by the operating system.

Abstract: The disclosure relates to a method and device for displaying logistics information, and computer readable storage medium. The method includes acquiring a logistics waybill identifier of at least one item from at least one e-commerce client that is installed on an operating system of a terminal and is configured to display a logistics page; acquiring logistics information corresponding to the logistics waybill identifier, wherein the logistics information indicates a logistics progress of the at least one item; aggregating the acquired logistics information of the at least one item; and displaying the aggregated logistics information in a preset display area provided by the operating system.