Silacyclohexane carbaldehyde compounds and processes for prepari

Details Silacyclohexane carbaldehyde compounds and processes for prepari Silacyclohexane carbaldehyde compounds and processes for prepari

1995-05-04

1996-06-18

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229966, 359103, 556406, C09K 1930, G02F 113, C07F 708

Patent

active

055274900

ABSTRACT:
A silacyclohexane carbaldehyde compound of the following formula (I) ##STR1## wherein Ar represents a phenyl group or a tolyl group, and R represents a phenyl group, a tolyl group, a linear alkyl group, a mono or difluoroalkyl group, a branched alkyl group, an alkoxyalkyl group or an alkenyl group. Processes for preparing a silacyclohexane-based liquid crystal compound of the following formula (II) or (III) from the silacyclohexane carbaldehyde are also described ##STR2## wherein X represents CN, F, Cl, CF.sub.3, CClF.sub.2, CHClF, OCF.sub.3, OCClF.sub.2, OCHF.sub.2, OCHClF, (O).sub.m CT=CX.sub.1 X.sub.2, O(CH.sub.2).sub.r (CF.sub.2).sub.s X.sub.3, R or OR wherein m is a value of 0 or 1, T and X.sub.1 independently represent H, F or Cl, X.sub.2 represents F or Cl, r and s are, respectively, a value of 0, 1 or 2 provided that r+s=2, 3 or 4, X.sub.3 represents H, F or Cl, and R has the same meaning as defined before, Y and Z independently represent a halogen or a methyl group, i and j are independently a value of 0, 1 or 2.

REFERENCES:
patent: 4973723 (1990-11-01), Cawthon et al.
patent: 5454977 (1995-10-01), Shimizu et al.
Washburn, S. S. et al., "Acetolysis of 4,4-disubstituted 4-silacyclohexyl tosylates: Effect of remote silicon substitution on organic reactivity." Journal of Organometallic Chemistry, vol. 133, 1977, pp. 7-17.

Affiliated with

Also associated with

Rating

Silacyclohexane carbaldehyde compounds and processes for prepari does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Silacyclohexane carbaldehyde compounds and processes for prepari, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silacyclohexane carbaldehyde compounds and processes for prepari will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-220867