The invention relates to a method for preparation of diesters from anhydrides of carboxylic acids.

The invention relates to a method for preparation of diesters from anhydrides of carboxylic acids.

The invention relates to a method for preparation of diesters from anhydrides of carboxylic acids.

A method is disclosed. The method includes receiving transaction data in an authorization request message from an access device, where the transaction data is associated with a merchant and a transaction location. The method also includes analyzing the transaction data to determine if a location database comprises location data corresponding to the merchant associated with the transaction data, and adding the transaction location and information regarding the access device to the location database.

A method is disclosed. The method includes receiving transaction data in an authorization request message from an access device, where the transaction data is associated with a merchant and a transaction location. The method also includes analyzing the transaction data to determine if a location database comprises location data corresponding to the merchant associated with the transaction data, and adding the transaction location and information regarding the access device to the location database.

Provided are a method for preparing modified natural oil using an organocatalyst supported on a polymer and a modified natural oil prepared using the same. According to the present invention, there are effects of increasing the content of monomers as a main product of modified natural oil, minimizing side products, and easily recovering and repeatedly reusing organocatalysts supported on a polymer.

Provided are a method for preparing modified natural oil using an organocatalyst supported on a polymer and a modified natural oil prepared using the same. According to the present invention, there are effects of increasing the content of monomers as a main product of modified natural oil, minimizing side products, and easily recovering and repeatedly reusing organocatalysts supported on a polymer.

Disclosed are a novel 1,2-diacylglycerol compound that useful for improving, preventing or treating inflammation-related diseases by inhibiting overexpression of various inflammatory cytokines such as IL-4 and IL-6 or chemokine CXCL8 related to the migration of inflammatory cells, a method for preparing the same, and an immunomodulator containing the same as an active ingredient. The 1,2-diacylglycerol compound is represented by Chemical Formula 2 in the patent specification.

Disclosed are a novel 1,2-diacylglycerol compound that useful for improving, preventing or treating inflammation-related diseases by inhibiting overexpression of various inflammatory cytokines such as IL-4 and IL-6 or chemokine CXCL8 related to the migration of inflammatory cells, a method for preparing the same, and an immunomodulator containing the same as an active ingredient. The 1,2-diacylglycerol compound is represented by Chemical Formula 2 in the patent specification.

The disclosure discloses a method for synthesizing 2,3,5,6-tetrafluoro-4-methoxymethyl benzyl alcohol from 1,4-bis(methoxymethyl)-2,3,5,6-tetrafluorobenzene, belongings to the technical field of organic synthesis. 1,4-bis(methoxymethyl)-2,3,5,6-tetrafluorobenzene reacts in mixed solution consisting of sulfuric acid aqueous solution and organic carboxylic acid, the obtained mixture is subjected to ester group hydrolysis reaction in the presence of an inorganic base and then to hydroxyl methylation reaction, 2,3,5,6-tetrafluoro-4-methoxymethyl benzyl alcohol is finally obtained via separation and purification, and 1,4-bis(methoxymethyl)-2,3,5,6-tetrafluorobenzene is recovered. The disclosure not only realizes the resource utilization of low-value 1,4-bis(methoxymethyl)-2,3,5,6-tetrafluorobenzene, and meanwhile has the advantages of mild reaction conditions, simple operation, high synthesis yield, good product quality and the like. The disclosure has high social and economic values.