申请人:Hoechst Aktiengesellschaft
公开号:US05872301A1
公开(公告)日:1999-02-16
Bifunctional compounds of the formula (I), ##STR1## in which: ##STR2## are naphthalene-2,6-diyl or ##STR3## is naphthalene-2,6-diyl or ##STR4## U, X, Y and Z are --CH.dbd., --CF.dbd. and --N.dbd., with the proviso that --CF.dbd. and --N.dbd. may each only be represented at most twice per six-membered ring, and that --CF.dbd. and --N.dbd. may not at the same time be represented twice in a six-membered ring; Hal is Cl, Br or I; or H, if X and/or Y are --CF.dbd. R.sup.3 is CH.sub.3 or OCH.sub.3 l is 0 or 1 m and n are 0, 1, 2 or 3. The compounds of the formula I are useful intermediates for the preparation of liquid-crystalline mixtures.
化学式(I)的双功能化合物,其中:naphthalene-2,6-diyl或naphthalene-2,6-diyl或U、X、Y和Z为--CH.dbd.、--CF.dbd.和--N.dbd.,但--CF.dbd.和--N.dbd.每个在六元环中最多只能表示两次,并且--CF.dbd.和--N.dbd.不能同时在六元环中表示两次;Hal为Cl、Br或I;或H,如果X和/或Y为--CF.dbd.;R.sup.3为CH.sub.3或OCH.sub.3;l为0或1;m和n为0、1、2或3。化合物(I)的化合物对于制备液晶混合物是有用的中间体。