75684-93-4Relevant articles and documents
Photoinduced pitch changes in chiral nematic liquid crystals formed by doping with chiral diarylethene
Yamaguchi,Inagawa,Nakazumi,Irie,Irie
, p. 2453 - 2458 (2001)
Chiral binaphthyl derivatives having two photochromic diarylethene units were synthesized in an attempt to use them as dopants for photoresponsive liquid crystals. These compounds showed thermally irreversible photochromic reactions. The circular dichrois
Synthesis of (±)-3,3′-diphenyl-2,2′-binaphthol via different routes using Pd and Ni as catalyst respectively
Fu, Zhengjiang,Cao, Xihan,Hao, Guangguo,Shi, Quanqing,Cai, Hu
, p. 831 - 836 (2020/09/09)
3,3′-Biphenyl-2,2′-binaphthols (BINOLs) are precursors of phosphoric acids that are widely used as ligands and catalysts in organic reactions. In this report, two routes for the synthesis of (±)-3,3′-diphenyl BINOLs via (±)-3,3′ bis-halogenated BINOLs int
Enantioselective iron/bisquinolyldiamine ligand‐catalyzed oxidative coupling reaction of 2‐naphthols
Liu, Wen-Bo,Usman, Muhammad,Wu, Lin-Yang
, (2020/02/25)
An iron‐catalyzed asymmetric oxidative homo‐coupling of 2‐naphthols for the synthesis of 1,1′‐Bi‐2‐naphthol (BINOL) derivatives is reported. The coupling reaction provides enantioenriched BINOLs in good yields (up to 99%) and moderate enantioselectivities (up to 81:19 er) using an iron‐complex generated in situ from Fe(ClO4)2 and a bisquinolyldiamine ligand [(1R,2R)‐N1,N2‐di(quinolin‐8‐yl)cyclohexane‐1,2‐diamine, L1]. A number of ligands (L2–L8) and the analogs of L1, with various substituents and chiral backbones, were synthesized and examined in the oxidative coupling reactions.