Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1989-06-01
1991-10-29
Maples, John S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549555, 549561, 25229961, 25229965, C07D30312, C09K 1934, C09K 1912
Patent
active
050618148
ABSTRACT:
Chiral nonracemic molecules which are useful in the preparation of high polarization density FLC compositions and which have the following structure are provided: ##STR1## wherein Ph is a 1,4 substituted phenyl group, m=2 and n=1 or m=1 and n=2, asymmetric carbons are indicated by *. R is an alkyl group having three to fifteen carbon atoms, and R' is an alkyl group having one to seven carbons. The invention in particular provides compounds having the R,R or S,S configuration in the epoxide tail. The epoxy phenylbenzoates of this invention display a property of inducing a tilt angle greater than expected in FLC compositions in which they are combined.
REFERENCES:
patent: 4638073 (1987-01-01), Walba et al.
patent: 4835295 (1989-05-01), Walba et al.
Ozaki et al. (1985) Jpn J. Appl. Phys. Part I 24, (Suppl. 24-3):63-65.
Walba et al. (1986) J. Amer. Chem. Soc. 108:7424-7425.
Hemmerling et al. (1988) European Patent Application, Publication No. 263437.
Ichihasi et al. (1988) European Patent Application, Publication No. 269-062.
Furukawa et al. (1988) European Patent Application, Publication No. 220747.
Vohra Rohini T.
Walba David M.
Wand Michael D.
Displaytech, Inc.
Maples John S.
Tucker Philip
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