The invention relates to bimesogenic compounds of formula I
wherein R
11
, R
12
, MG
11
, MG
12
, X
11
, X
12
and Sp
1
have the meaning given in claim
1
, to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.
Investigation of the transmission of the electronic effects of substituents in 4- and 4?-fluorobenzyl ethers by the19F NMR method
作者:S. I. Pombrik、A. S. Peregudov、D. N. Kravtsov
DOI:10.1007/bf00947711
日期:1985.3
266. The halogenation of phenolic ethers and anilides. Part IX. The influence of fluorine and of alkyl groups
作者:Brynmor Jones
DOI:10.1039/jr9380001414
日期:——
Pd(OAc)2-catalyzed synthesis of benzyl phenyl ether derivatives with H2O2 as an oxidant in neat water
作者:Qian-Qian Chen、Hui-Xian Zhang、Jian-Xin Yang
DOI:10.1016/j.catcom.2018.10.026
日期:2019.1
A new protocol for Pd(OAc)2-catalyzed reactions of different benzyl bromides and various arylboronic acids has been developed to form functionalized benzyl phenyl ethers. This method represents the first instance where arylboronic acid is used as a reaction substrate for benzyl phenyl ethersynthesis with H2O2 as the green oxidant under atmospheric oxygen and pure H2O as an environmental friendly solvent
已经开发出用于不同苄基溴和各种芳基硼酸的Pd(OAc)2催化反应的新方案,以形成官能化的苄基苯基醚。该方法代表了首先使用芳基硼酸作为苄基苯基醚合成的反应底物的方法,其中在大气氧气下以H 2 O 2为绿色氧化剂,而纯H 2 O为环境友好的溶剂,而无需膦和N的配体,出色的官能团耐受性和可观的收率。