3AC07 ジアステレオマー型反強誘電性液晶の不斉触媒的合成と評価

概要

論文の詳細を見る
Anti-ferroelectric(SmC_A^*) and ferroelectric(SmC^*) phases of α-trifluoromethyl-β-methyl-substituted liquid crystalline (LC) molecules, synthesized highly diastereo- and enantioselectively through our chiral titanium complex-catalyzed fluoral-ene reaction, were determined by thermal analysis and electro-optic measurements. Phase transitions were thus found to be critically dependent on the diastereomeric excess for u (R_α,S_β)-diastereomers of the LC molecules. And the liquid crystalline molecules also critically depend on the enantiomeric purities (% ee) not only for u- but also for l-diastereomers to show eventually an unknown phase in the racemic region of either an u- or l-diastereomer.
日本液晶学会の論文
1997-09-24