| 摘要 |
NEW MATERIAL:A compound shown by the formula I [R is 1-10C straight- chain alkyl, alkoxy, halogen, or cyano; ring A is group shown by the formula II or formula III; R' is 1-10C straight-chain alkyl; cyclohexane ring is in trans(equatorial-equatorial) configuration]. EXAMPLE:A compound shown by the formula IV. USE:An electro-optical display material. PREPARATION:A compound shown by the formula V is reacted with a compound shown by the formula VI in anhydrous tetrahydrofuran or anhydrous ether to give a compound shown by the formula VII, which is reacted with phosphorus tetrachloride in an organic solvent such as chloroform, etc., to give a compound shown by the formula VIII, which is reacted with 1,8-diaza- bicyclo(5,4,0)undecene-7 in a polar solvent such as N,N'-dimethylformamide, etc., to give a compound shown by the formula I.
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