我们报道了受挫的路易斯对(FLP)催化的一系列脂族多氟化碳具有同等的双链和双链CF位置的单选择性CF活化。该方法可以应用于芳族,醚,硫醚和烷基支持的氟甲基。我们扩大了与单选择性C–F激活一起使用的FLP基础合作伙伴的范围,以包括硫化物。随后可以通过S N 2取代,光氧化还原烷基化和Suzuki偶联将活化的产物官能化。
Novel Electroluminescent Polymers with Fluoro Groups in Vinylene Units
作者:Youngeup Jin、Jinwoo Kim、Sungeun Lee、Jin Young Kim、Sung Heum Park、Kwanghee Lee、Hongsuk Suh
DOI:10.1021/ma0493022
日期:2004.9.1
New electroluminescent polymers with fluorogroups in vinylene units, poly(p-phenylenedifluorovinylene) (PPDFV) and poly(2-dimethyloctylsilyl-p-phenylenedifluorovinylene) (DMOS−PPDFV), have been synthesized by GILCH polymerization. These polymers have been used as the electroluminescent (EL) layers in double-layer light-emitting diodes (LEDs) (ITO/PEDOT/polymer/Al). PPDFV shows photoluminescence around
FACILE AND EFFECTIVE METHOD OF PREPARING 1,4-BIS(CHLORODIFLUOROMETHYL)BENZENE
申请人:LIN Chun-Hsu
公开号:US20130116482A1
公开(公告)日:2013-05-09
The present invention relates to a facile method of preparing 1,4-bis(chlorodifluoromethyl)benzene, comprising the steps of: (A) providing a reactant liquid of 1,4-bis(difluoromethyl)benzene; optionally (B) providing a light source for UV radiation; and (C) introducing chlorine gas into the reactant liquid at a temperature of 50-90° C. under a pressure above 1 atm to obtain 1,4-Bis(chlorodifluoromethyl)benzene. The invented facile method can be utilized in a batch process or a continuous process for effective production of 1,4-bis(chlorodifluoromethyl)benzene.
METHOD FOR THE PREPARATION OF ALPHA,ALPHA,ALPHA',ALPHA'-TETRAFLUORO-P-XYLENE
申请人:Jong Jeng Shean
公开号:US20050283031A1
公开(公告)日:2005-12-22
A method for the preparation of α,α,α′,α′-tetrafluoro-p-xylene is disclosed. α,α,α′,α′-tetrachloro-p-xylene and KF and a small amount of phase transfer catalyst are dissolved in solvent, xylene, and undergo a recycle reaction for 48 hours, after which 60% of the product is obtained.
A method for the synthesis of TFPX (α,α,α′,α′-tetrafluoro-p-xylene) is disclosed, which comprises the following steps: (a) providing a sulpholane solution comprising TCPX (α,α,α′,α′-tetrachloro-p-xylene); (b) mixing the sulpholane solution with alkali metal fluoride, and phase transfer catalyst to form a mixture, wherein the phase transfer catalyst is quaternary phosphonium salt; and (c) heating the mixture.