“…From lots of the 3,6-disubstituted cyclohex-2-enones (I), trans-2,5-disubstituted cyclohexanones (II) and their derivatives, which have been synthesised and investigated, we have to described the following: (A) Substituted cyclohexenes (1, 2, 7; 8a-d), fluorocyclohexenes (9a-d) and fluorocyclohexanes (4,6), which are characterised a low optical anisotropy and viscosity, and a low temperature formation of the nematic phase (Scheme 6; Tables 1 and 2). [30][31][32][33] (B) Lateral substituted p-terphenyls, p-quaterphenyls and p-quinquephenyls (10-17), which, as our investigations have shown [34][35][36][37], are easily formed in a one-stage procedure from the corresponding 3,6-disubstituted cyclohex-2-enones (I.3) (Scheme 7).…”