Optically active compounds, liquid crystal compositions comprising said compounds, and liquid crystal optical modulators using said compositions

摘要

The invention relates to optically active compounds represented by the general formula <IMAGE> wherein R1, R2, Q1, Q2, Q3, <IMAGE> 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.