摘要:
The invention provides a useful synthetic intermediate for obtaining liquid crystal compounds with a large negative value of dielectric anisotropy (Δε), low viscosity, and high refractive index anisotropy (Δn), as well as a manufacturing method using it and the resulting product. The compound with a conjugated group of -CH=CH- or -C≡C- as a linking group, for example, a synthetic intermediate represented by the following formula (i-2) is adjusted in three steps from 6-bromo-2-phenol, and further synthesized into a liquid crystal compound represented by (ii-2) by catalytic hydrogenation.