104582-39-0Relevant academic research and scientific papers
Liquid crystalline compounds and mixtures
-
, (2008/06/13)
This invention concerns compounds of the formula: STR1 wherein X is a single covalent bond, --CH2 CH2 --, 1,4-phenylene, a 2,5-disubstituted pyrimidine ring or a group of the formula: STR2 ring A is trans-1,4-cyclohexylene or, when X is a single covalent bond, ring A may also be 1,4-phenylene, a 2,5-disubstituted pyrimidine ring or a trans-2,5-disubstituted m-dioxane ring; and R1 is straight-chain trans-1-alkenyl having 2 to 12 carbon atoms or straight-chain trans-3-alkenyl having 4 to 12 carbon atoms or, when X is --CH2 CH2 --, R1 may also be 1,4-phenylene, a 2,5-disubstituted pyrimidine ring or a group of formula IA or when ring A is a 2,5-disubstituted pyrimidine ring or a trans-2, 5-disubstituted m-dioxane ring, R1 may also be straight-chain alkyl with 1 to 12 carbon atoms; and one of the benzene rings may have a lateral fluorine substituent; their manufacture, and liquid crystalline mixtures and electro-optical devices containing same.
