Under mild condition, using FeCl3 as catalyst, a series of fnnctionalized diarylmethanes were prepared efficiently from the reactions of arenes with paraformaldehyde. This catalytic system is not sensitive to air and ...Under mild condition, using FeCl3 as catalyst, a series of fnnctionalized diarylmethanes were prepared efficiently from the reactions of arenes with paraformaldehyde. This catalytic system is not sensitive to air and moisture.展开更多
We developed a simple and efficient Cu（II）-catalyzed ligand-free oxidation of diarylmethanes and secondary alcohols using 70% ten-butyl hydroperoxide （TBHP） in water. A series of diarylmethanes were directly oxidi...We developed a simple and efficient Cu（II）-catalyzed ligand-free oxidation of diarylmethanes and secondary alcohols using 70% ten-butyl hydroperoxide （TBHP） in water. A series of diarylmethanes were directly oxidized into diaryl ketones in 67%--98% yields. Additionally, various secondary alcohols were also transformed into the desired products in 48%--98% yields. Importantly, the catalytic system in the absence of any organic solvent, surfactant, or phase transfer agent, had a wide substrate scope and a high tolerance for various functional groups.展开更多
ReCI（CO）5 catalyzed the dehydration reaction of aromatic compounds with 1,3,5-trioxane or aqueous formaldehyde （37 wt%） under air. The reactions of a variety of aromatic compounds beating electron-donating group（...ReCI（CO）5 catalyzed the dehydration reaction of aromatic compounds with 1,3,5-trioxane or aqueous formaldehyde （37 wt%） under air. The reactions of a variety of aromatic compounds beating electron-donating group（s） with 1,3,5-trioxane afforded the corresponding diarylmethanes in moderate to good yields.展开更多
An efficient BF3.OEt2-promoted benzylation of arenes and heteroarenes with various benzyl ether derivatives has been developed. This method provided alternative access to valuable diarylmethane in good yields under mi...An efficient BF3.OEt2-promoted benzylation of arenes and heteroarenes with various benzyl ether derivatives has been developed. This method provided alternative access to valuable diarylmethane in good yields under mild conditions via an easy work-up procedure.展开更多
基金the National Natural Science Foundation of China(Nos.20772114 and 20702050)The Innovation Fund for Outstanding Scholar of Henan Province(No.0621001100)for financial support.
文摘Under mild condition, using FeCl3 as catalyst, a series of fnnctionalized diarylmethanes were prepared efficiently from the reactions of arenes with paraformaldehyde. This catalytic system is not sensitive to air and moisture.
基金We gratefully acknowledge financial support of this work by the National Natural Science Foundation of China （No. 21563025）, Shihezi University Training Programme for Distinguished Youth Scholars （No. 2014ZRKXJQ05）, and Start-Up Foundation for Young Scientists of Shihezi University （RCZX201408）.
文摘We developed a simple and efficient Cu（II）-catalyzed ligand-free oxidation of diarylmethanes and secondary alcohols using 70% ten-butyl hydroperoxide （TBHP） in water. A series of diarylmethanes were directly oxidized into diaryl ketones in 67%--98% yields. Additionally, various secondary alcohols were also transformed into the desired products in 48%--98% yields. Importantly, the catalytic system in the absence of any organic solvent, surfactant, or phase transfer agent, had a wide substrate scope and a high tolerance for various functional groups.
基金Project supported by the National Natural Science Foundation of China （No. 20573061）.
文摘ReCI（CO）5 catalyzed the dehydration reaction of aromatic compounds with 1,3,5-trioxane or aqueous formaldehyde （37 wt%） under air. The reactions of a variety of aromatic compounds beating electron-donating group（s） with 1,3,5-trioxane afforded the corresponding diarylmethanes in moderate to good yields.
文摘An efficient BF3.OEt2-promoted benzylation of arenes and heteroarenes with various benzyl ether derivatives has been developed. This method provided alternative access to valuable diarylmethane in good yields under mild conditions via an easy work-up procedure.
