Nitrogen-containing heterocyclic compounds

Abstract

Abstract Nitrogen-containing heterocyclic compounds of the formula II ##STR1## wherein R 1 and R 2 in each case denote an alkyl group having 1 to 15 C atoms, wherein one or more CH 2 groups may also be replaced by a grouping selected from the group comprising --O--, --S--, --CO--, --O--CO--, --O--COO--, --CO--O--, --CH═CH--, --CH--halogen and --CHCN--, or else by a combination of two suitable groupings, two heteroatoms not being directly linked to each other, m denotes 0 or 1, Ar denotes 1,4-phenylene, 4,4'-biphenylyl or 2,6-naphthylene, wherein one or more CH groups are in each case replaced by N, Z denotes --C--O--, --O--CO--, --CH 2 O--, --OCH 2 --, --CH 2 CH 2 --, --CH 2 CHCN--, --CHCNCH 2 --, --CH═CH or a single bond, and A denotes unsubstituted 1,4-cyclonexylene or 11,4-cyclohexylene substituted in position 1 or position 4 by CN, with the proviso that if A=unsubstituted 1,4-cyclonexylene, Z denotes --CHCNCH 2 -- or --CH 2 CHCN-- and/or at least one CH 2 group is replaced by --CHCN-- in at least one of the radicals R 1 and R 2 , are suitable for use as components of smectic liquid-crystalline phases.

Inventors

• 👤 Andreas Wachtler
• 👤 Rudolf Eidenschink
• 👤 Joachim Krause
• 👤 Bernhard Scheuble

Bibliographic Details