2,2'-Binaphthalene Ester Chiral Dopants for Cholesteric Liquid Crystal Displays
申请人:Diehl Donald R.
公开号:US20140054498A1
公开(公告)日:2014-02-27
A liquid crystal composition comprising a chiral dopant compound represented by the following structure (Structure 1):
wherein:
R1 and R2 are independently hydrogen, —(C═O)R9, —(C═O)R10, alkyl, aryl, alkaryl, alkenyl, cycloalkyl, alkoxyaryl, or heterocyclic all either substituted or unsubstituted, or combine to form a carbocyclic or heterocyclic ring; and R3-R9 are as described in the disclosure.
Also featured are liquid crystal compositions comprising a chiral dopant compound represented by any of Structure 2-4 as described in the disclosure.
A Ru(II)-catalyzed coupling of various α-carbonyl phosphoniums with sulfoxoniumylides has been realized for the facile synthesis of 1-naphthols in good to excellent yields. This oxidant-free transformation proceeds through Ru-catalyzed C–H activation of phosphoniums, Ru-carbene insertion, and intramolecular Wittig reaction processes.
Ligand-Controlled Nickel-Catalyzed Reactions of Benzocyclobutenones with Alkynyltrifluoroborates: Diverse Construction of Polysubstituted Naphthols
作者:Yuhang Wang、Peng Ma、Ning Ma、Jianhui Wang
DOI:10.1021/acs.orglett.3c01091
日期:2023.5.19
the ligand led to predictably divergent synthesis of a wide range of 1-naphthols and 2-naphthols without C2 and C3 substituents, respectively, from BCBs and potassium alkynyltrifluoroborate, and the increase in the amount of PMe3 resulted in tandem reaction of 2 equiv of BCB with the borate to afford 3,4,5-trisubstituted 2-naphthols. The fabulous ligand effect resulted in the facile and unique construction