Coveney, Donal J.; Patel, Vinod F.; Pattenden, Gerald, Journal of the Chemical Society. Perkin transactions I, 1990, # 10, p. 2721 - 2729
作者:Coveney, Donal J.、Patel, Vinod F.、Pattenden, Gerald、Thompson, David M.
DOI:——
日期:——
Cationic Rhodium(I)/BINAP Complex-Catalyzed Isomerization of Secondary Propargylic Alcohols to α,β-Enones
作者:Ken Tanaka、Takeaki Shoji
DOI:10.1021/ol051335u
日期:2005.8.1
We have developed a cationic rhodium(l)/BINAP complex-catalyzed isomerization of secondary propargylic alcohols to alpha,beta-enones. The asymmetric variant of this reaction, a kinetic resolution of secondary propargylic alcohols, was also developed with good selectivity. The mechanistic study revealed that the isomerization proceeds through intramolecular 1,3- and 1,2-hydrogen migration pathways.
COVENEY, DONAL J.;PATEL, VINOD F.;PATTENDEN, GERALD;THOMPSON, DAVID M., J. CHEM. SOC. PERKIN TRANS. PT 1,(1990) N0, C. 2721-2728
作者:COVENEY, DONAL J.、PATEL, VINOD F.、PATTENDEN, GERALD、THOMPSON, DAVID M.
DOI:——
日期:——
LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT
申请人:Chi Mei Corporation
公开号:US20170022419A1
公开(公告)日:2017-01-26
A liquid crystal alignment agent capable of forming a liquid crystal alignment film having good pre-tilt angle light stability, the liquid crystal alignment film, and a liquid crystal display element having the liquid crystal alignment film are provided. The liquid crystal alignment agent includes a polymer (A), a photosensitive polysiloxane (B), and a solvent (C). The polymer (A) is obtained by reacting a mixture, wherein the mixture includes a tetracarboxylic dianhydride component (a1) and a diamine component (a2). The diamine component (a2) includes a diamine compound (a2-1) represented by formula (1). The photosensitive polysiloxane (B) is obtained by reacting a silane compound (b1-1) containing an epoxy group and a cinnamic acid derivative (b2).