Compound having unsaturated side chain, process for preparing th

Details Compound having unsaturated side chain, process for preparing th Compound having unsaturated side chain, process for preparing th

1995-06-06

1997-09-02

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 25229962, 544238, 544298, 544336, 544408, 546133, 546134, 546137, 546138, 546141, 546152, 546153, 546290, 546339, 5263181, 5263182, 5263297, C09K 1934, C07D23902, C07D24102, C08F12000

Patent

active

056628285

ABSTRACT:
A compound having an unsaturated side chain represented by the formula: ##STR1## in which A and B are the same and different and represent an aromatic or heterocyclic group or either one of A and B represents a single bond; X.sub.1, X.sub.2 and X.sub.3 are the same or different and represent a hydrogen atom or a lower alkyl group; R.sub.1 represents a saturated or unsaturated alkyl group which may be substituted with a halogen atom or an alkoxyalkyl group which may be substituted with a halogen atom; X represents --CH.sub.2 CH.sub.2 --, --CH.dbd.CH--, --C.tbd.C-- or a single bond; n is an integer of 0 to 6; q is an integer of 1 to 15; p and s are each 0 or 1; and the asterisk * indicates an asymmetric carbon atom, which is useful as an intermediate of a liquid crystal or a monomer of a liquid crystalline polymer.

REFERENCES:
patent: 4913839 (1990-04-01), Uchida et al.
patent: 5138010 (1992-08-01), Keller et al.
patent: 5211877 (1993-05-01), Andrejewski et al.
patent: 5252251 (1993-10-01), Sato et al.
patent: 5332520 (1994-07-01), Bach et al.
patent: 5332521 (1994-07-01), Yuasa et al.
patent: 5332522 (1994-07-01), Chen et al.

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