Silacyclohexane compounds, a liquid crystal composition comprisi

Details Silacyclohexane compounds, a liquid crystal composition comprisi Silacyclohexane compounds, a liquid crystal composition comprisi

1995-09-01

1997-01-21

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 25229963, 25229964, 25229965, 25229966, 25229967, 556406, 349182, C09K 1934, C09K 1930, C07F 708, G02F 113

Patent

active

055956866

ABSTRACT:
A silacyclohexane compound of the following formula (I) ##STR1## wherein R represents an organic residue; at least one of ##STR2## represents a substituted or unsubstituted trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group and the other represents a trans-1,4-cyclohexylene group, L.sub.1 and L.sub.2 independently represent H, F, Cl or CH.sub.3 ; X represents an organic residue or CN, F, Cl; and m and n are, respectively, 0 or 1 provided that m+n=1. Silacyclohexane compounds are useful in liquid crystal compositions and also in liquid crystal devices.

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Stephen S. Washburne et al, Journal of Organometallic Chemistry, 133, Acetolysis of 4,4-Disubstituted 4-Silacyclohexyl Tosylates: Effect of Remote Silicon Substitution on Organic Reactivity, Elsevier Scquoia S. A., Lausanne, 1977, pp. 7-17.
Raymond A. Felix et al, Journal of Organometallic Chemistry, vol. 37, No. 14, Preparation and Spectral Properties of .beta.-Silyl-Substituted .alpha.,.beta.-Unsaturated Ketones, 1972, pp. 2323-2327.
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