A fluorenylaminoketone photoinitiator, a preparation method thereof, and a UV photocurable composition containing same. The photoinitiator has a compound having a structure as shown in general formula (I) or a derivative compound thereof. The fluorenylaminoketone photoinitiator may effectively improve the solubility of traditional photoinitiators and reduce the use of micromolecular active diluents, and may also have high sensitivity and good deep-layer curing. It has very good promotion effect on popularization and application of photocurable compositions, particularly colored ink systems, in the field of photocuring. A UV photocurable composition containing such a fluorenylaminoketone photoinitiator can have an advantage in terms of high sensitivity, no residue after development, good pattern integrity, no or little odor of coating layers after curing, or excellent yellowing resistance.

The present invention relates to novel lignin-derived compounds and compositions comprising the same and their use as redox flow battery electrolytes. The invention further provides a method for preparing said compounds and compositions as well as a redox flow battery comprising said compounds and compositions. Additionally, an assembly for carrying out the inventive method is provided.

The present invention relates to novel lignin-derived compounds and compositions comprising the same and their use as redox flow battery electrolytes. The invention further provides a method for preparing said compounds and compositions as well as a redox flow battery comprising said compounds and compositions. Additionally, an assembly for carrying out the inventive method is provided.

The present invention relates to a method for preparing 14-methyl-16-oxabicyclo-[10.3.1]pentadecenes in a two-step synthesis from 3-methyl-1,5-cyclopentadecane-dione as starting material.

The present invention relates to a method for preparing 14-methyl-16-oxabicyclo-[10.3.1]pentadecenes in a two-step synthesis from 3-methyl-1,5-cyclopentadecane-dione as starting material.

Disclosed is a f fluorination method comprising providing a fluorinating reagent and a solvent to a reaction mixture; providing a compound having the formula ArX to the reaction mixture; wherein, A is a aryl, substituted aryl, heteroaryl or substituted heteroaryl, and X is CI, Br, I or NO.sub.2, providing tetramethylammonium 2,6-dimethylphenolate to the reaction mixture; and reacting under conditions sufficient to provide a species having the formula ArF.

Disclosed is a f fluorination method comprising providing a fluorinating reagent and a solvent to a reaction mixture; providing a compound having the formula ArX to the reaction mixture; wherein, A is a aryl, substituted aryl, heteroaryl or substituted heteroaryl, and X is CI, Br, I or NO.sub.2, providing tetramethylammonium 2,6-dimethylphenolate to the reaction mixture; and reacting under conditions sufficient to provide a species having the formula ArF.

The present invention discloses a benzyl phenyl ether derivative, a preparation method therefor, and a pharmaceutical composition and uses thereof. Specifically, the invention relates to benzyl phenyl ether derivatives represented by formula (I), a pharmaceutically-acceptable salt thereof, a stereoisomer thereof, a preparation method therefor, a pharmaceutical composition containing the one or more compounds, and uses of the compounds in treating diseases related to PD-1/PD-L1 signal channels, such as cancers, infectious diseases and autoimmune diseases.

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The present invention discloses a phenylate derivative, a preparation method therefor, and a pharmaceutical composition and uses thereof. Specifically, the invention relates to phenylate derivatives represented by formula (I), a pharmaceutically-acceptable salt thereof, a stereoisomer thereof, a preparation method therefor, a pharmaceutical composition containing the one or more compounds, and uses of the compounds in treating diseases related to PD-1/PD-L1 signal channels, such as cancers, infectious diseases and autoimmune diseases.

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Disclosed is a cyclopropanation process comprising the step of reacting an alkene compound having at least one carbon-carbon double bond with at least one dihaloalkane. The reaction is carried out in the presence of (i) particulate metal Zn, (ii) catalytically effective amount of particulate metal Cu or a salt thereof, (iii) at least one haloalkylsilane, and (iv) at least one solvent.