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US 5,084,204 AGranted
Naphthylacetylenes
AssigneeMerck Patent GmbH
InventorsVolker Reiffenrath, Joachim Krause, Georg Weber
Life of this patent
Estimating the term…
Abstract
Naphthylacetylenes of the formula I R.sup.1 --(A.sup.1 --Z.sup.1).sub.m --A.sup.2 --C.tbd.C--A.sup.3 --(Z.sup.2 --A.sup.4).sub.n --R.sup.2 I in which R.sup.1, A.sup.1, Z.sup.1, m, A.sup.2, A.sup.3, Z.sup.2, A.sup.4, n and R.sup.2 have the meanings described herein, are suitable as components of liquid crystal phases.
Claims13
A naphthyl)acetylene compound of the formula
- R.sup.1 --A.sup.2 --C.tbd.C--A.sup.3 --R.sup.2
- in which
- R.sup.1 and R.sup.2 are in each case independently of one another an alkyl group or polyfluoroalkyl group having up to 15 C atoms, in which one or more CH.sub.2 groups or CF.sub.2 groups respectively can also be replaced by --O--, --S--, --CO--, --O--CO--, --O--COO--, --CO--O--, --C.tbd.C--, --CH.dbd.CH--, --CH-halogen- and --CHCN--, where two heteroatoms are not directly connected with one another, and one of the radicals R.sup.1 and R.sup.2 can also be halogen, CN or NCS;
- and
- A.sup.2 and A.sup.3 are in each case independently of one another
- (a) 2,6-naphthylene radical,
- (b) 1,2,3,4-tetrahydro-2,6-naphthylene radical,
- (c) 1,4-phenylene radical, in which one or more CH groups can also be replaced by N,
- (d) 1,4-cyclohexylene radical, or
- (e) radical from the group comprising 1,4-cyclohexenylene, 1,4-cyclohexadienylene or 1,4-bicyclo(2.2.2)-octylene,
- where these radicals (a)-(e) can be substituted one or more times by halogen and/or cyano;
- with the proviso that at least one of the groups A.sup.2 or A.sup.3 is 2,6-naphthylene or 1,2,3,4-tetrahydro-2,6-naphthylene.
9 more elements
Dependencies are inferred from the claim text.