We designed and prepared a trifluoromethylation reagent, N-trifluoromethylsuccinimide (NTFS), and use it for the trifluoromethylation of aromatic amines without metal. This protocol exhibits broad substrate scope and wide functional group compatibility. The synthetic utility of the method is further demonstrated by the improvedsynthesis of the antiasthmatic drug Mabuterol.
Novel synthesis of 3-amino-2-methylbenzotrifluoride
申请人:SCHERING CORPORATION
公开号:EP0295674A1
公开(公告)日:1988-12-21
This invention relates to a novel process for preparing 3-amino-2-methylbenzotrifluoride from benzotrifluoride. The process comprises nitrating benzotrifluoride to form 3-nitrobenzotrifluoride, reacting this compound with trimethyl sulphoxonium halide to form 3-nitro-2-methylbenzotrifluoride and reducing the nitro group to an amino group.
Electroluminesecent material, method for manufacturing same, and luminesecent device
申请人:WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
公开号:US11424413B2
公开(公告)日:2022-08-23
The present disclosure provides an electroluminescent material, a method for manufacturing the electroluminescent material, and a luminescent device, by employing a fluorenyl group showing good planarity and strong visible π-π* absorption as π-based system, and simultaneously introducing a compound containing a carbazole group as an electron donor and a compound containing a pyridine group as an electron acceptor to realize an electroluminescent material, a method for manufacturing the electroluminescent material and a luminescent device with emitting a blue light and a high electroluminescence efficiency.