6 results about "Methyl gallate" patented technology

This invention discloses a method for preparing alkyl gallate without a dehydrating agent, belonging to the field of chemical reaction auxiliary technology. By optimizing the raw material ratio of the reaction system, precisely controlling the reaction environment parameters and the condensate separation rate, this invention utilizes the azeotropic properties of alcohol and water to achieve efficient separation of the water generated in the reaction. It can promote the forward esterification reaction without adding any dehydrating agent, achieving the same or even better water separation and reaction promotion effects without the need for a dehydrating agent. This invention eliminates the need for a dehydrating agent, and the synthesized methyl gallate, ethyl gallate, propyl gallate, octyl gallate, and lauryl gallate can reach a maximum content of 99.2%, with a stable product yield of 50-57g. This effectively reduces production costs, avoids the pollution problems caused by dehydrating agents, simplifies the production process, and possesses both green environmental protection and promising prospects for industrial-scale application.

The invention provides a construction method of a Xipayi gingival fixing liquid characteristic spectrum based on UPLC and a method for determining the content of characteristic components of Xipayi gingival fixing liquid. The construction method comprises the following steps: by taking gallic acid, methyl gallate, benzoic acid, 1, 2, 3, 6-tetragalloylglucose and 1, 2, 3, 4, 6-pentagalloylglucose as reference substances, respectively adding water for dissolving to obtain reference substance solutions; mixing the Xipayi gingival fixing liquid with water, and filtering to obtain a test solution; placing the test sample solution and the various reference substance solutions in an ultra-high performance liquid chromatograph, determining to obtain a test sample spectrum and a reference substance spectrum, and establishing a characteristic spectrum by adopting a traditional Chinese medicine chromatographic fingerprint spectrum similarity evaluation system. The specific chromatogram has good reproducibility and batch consistency, and can be used as a standard for overall quality evaluation. The construction method can also be used for content determination of the characteristic components, and integrated detection of characteristic spectrum construction and multi-index content determination is realized.

The invention discloses an aryl acetylene supramolecular polymer with adjustable circular polarization luminescence, preparation and application, and relates to the technical field of circular polarization luminescent materials, and the specific preparation method comprises the following steps: reacting methyl gallate with bromododecane to obtain a compound A; reacting the compound A with sodium hydroxide to obtain a compound B; the compound B, 1-(4-bromophenyl) ethylamine, 1-ethyl-(3-dimethylaminopropyl) carbodiimide and 4-dimethylaminopyridine are subjected to a reaction, and a first intermediate is prepared; reacting the first intermediate, dichlorobis (triphenylphosphine) palladium, copper iodide and trimethylsilylacetylene to prepare a second intermediate; reacting the second intermediate, dichlorobis (triphenylphosphine) palladium, copper iodide and a diiodo-substituted aromatic compound to prepare aryl acetylene; and S6, dissolving aryl acetylene in an organic solvent to obtain the aryl acetylene supramolecular polymer with adjustable circular polarization luminescence. The invention develops a CPL material with tunable properties.

A method of making a flame retardant, and phosphorylated bio-based flame retardants, are provided. The method includes reacting a bio-based-derived starting compound with a phosphate-containing compound or o-phosphoric acid to obtain a phosphorylated bio-based material. The phosphate-containing compound may be diphenyl phosphoryl chloride. The obtained phosphorylated bio-based material may be phosphorylated cardanol, vanillin diphenyl phosphate, vanillyl alcohol diphenyl phosphate, methyl gallate triphenyl phosphate, bis(dihydrogenphosphate) of vanillyl alcohol diglicidyl ether, or bis(dihydrogenphosphate) of bisphenol A diglicidyl ether. An article including the phosphorylated bio-based flame retardant is also provided. The article may be a building material, a textile, a plastic, a foam, an adhesive, packaging, and an electrical housing.

The application discloses a circularly polarized luminescence controllable arylacetylene supramolecular polymer, a preparation method and application, relates to the technical field of circularly polarized luminescence materials, and specifically comprises the following steps: reacting methyl gallate and bromododecane to obtain compound A; reacting the compound A and sodium hydroxide to obtain compound B; reacting the compound B, 1-(4-bromophenyl)ethylamine, 1-ethyl-(3-dimethylaminopropyl)carbonyldiimide and 4-dimethylaminopyridine to obtain a first intermediate; reacting the first intermediate, dichlorobis(triphenylphosphine)palladium, copper iodide and trimethylsilyl acetylene to obtain a second intermediate; reacting the second intermediate, dichlorobis(triphenylphosphine)palladium, copper iodide and diiodo-substituted aromatic compounds to obtain arylacetylene; and S6: dissolving the arylacetylene in an organic solvent to obtain the circularly polarized luminescence controllable arylacetylene supramolecular polymer. The CPL material with adjustable characteristics is developed.

The invention belongs to the technical field of tea production and fermentation, and particularly discloses a phlomis spp. Strain capable of improving tea quality and application of the phlomis spp. Strain, the classification name of the phlomis spp. Strain is Diaporthe masrevicii, and the preservation number of the phlomis spp. Strain is CGMCC No.42364. The strain is reported for the first time in the field of tea and belongs to a rare tea tree endophyte. Experiments prove that the strain can significantly improve the brightness and the brilliance degree of tea soup, and has a certain adjusting effect on the taste of the tea soup; metabonomics analysis shows that the strain can promote mass conversion and synthesis of functional components such as methyl caffeate, methyl gallate, ethyl gallate, hesperidin, isoschaftoside and the like in a tea soup fermentation process; the conversion and synthesis of beneficial components such as dihydromyricetin, leucocyanidin, isochlorogenic acid A, plantaginin, malic acid, sorbic acid and gluconic acid can be promoted in an exogenous sugar addition environment.