Optically active compounds, liquid crystal composition containing said compounds, and liquid crystal optical modulator using said composition

摘要

The invention relates to optically active compounds represented by the general formula I <IMAGE> [I] wherein R1, R2, R3, R4, Q1, Q2, Q3, and M are defined as in the specification, methods and intermediates for their preparation, liquid crystal compositions comprising at least one optically active compound of formula I and their use in electrooptical display, switching and modulation devices.