公开(公告)号：CA2075198A1

公开(公告)日：1991-08-03

申请号：CA2075198

申请日：1991-01-24

Applicant: HOECHST AG

Inventor： ILLIAN GERHARD ,  MUELLER INGRID ,  HARADA TAKAMARA

IPC: C07C69/86 ,  C07C13/16 ,  C07C15/02 ,  C07C43/20 ,  C07C69/92 ,  C07C69/94 ,  C07C69/96 ,  C07D20060101 ,  C07D213/30 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D285/12 ,  C07D405/12 ,  C07D417/12 ,  C07F7/08 ,  C09K19/08 ,  C09K19/20 ,  C09K19/34 ,  C09K19/42 ,  C09K19/46 ,  G02F1/13 ,  C07D239/32 ,  C07F1/08 ,  C07D237/14 ,  C07D241/18 ,  C07D213/65

Abstract: - 32 - HOE 90/F 038 of the disclosure Geminal dimethylalkyl compounds, process for their preparation and their use in liquid-crystalline mixtures Geminal dimethylalkyl compounds of the formula (I) (I) in which: R1 is, for example, straight-chain or branched (with or without an asymmetric carbon atom) alkyl or alkenyl having 2 to 16 carbon atoms, A1, A2 and A3 are, for example, identical or different 1,4-phenylene, 1,4-cyclohexylene or pyrimidine2,5-diyl, M1 and M2 are, for example, identical or different CO-O or O-CO, G is, for example, identical or different straight chain or branched alkylene having 1 to 16 carbon atoms, k, 1, m and n are zero or 1, and R6 is straight-chain alkyl having 1 to 10 carbon atoms, can advantageously be employed in liquid-crystalline mixtures. In liquid-crystalline mixtures, said compounds result in a melting point depression, in a shift in the temperature limit of the Sc phase in ferroelectric mixtures and in other improvements of important electrooptical characteristic values.

公开(公告)号：DE3915804A1

公开(公告)日：1990-11-15

申请号：DE3915804

申请日：1989-05-13

Applicant: HOECHST AG

Inventor： MEIJERE ARMIN DE PROF DR ,  DUEBAL HANS-ROLF DR ,  ESCHER CLAUS DR ,  HARADA TAKAMARA ,  HEMMERLING WOLFGANG DR ,  ILLIAN GERHARD DR ,  MUELLER INGRID DR ,  MURAKAMI MIKIO ,  OHLENDORF DIETER DR ,  WINGEN RAINER DR

IPC: G02F1/13 ,  C07C13/04 ,  C07C13/28 ,  C07C22/00 ,  C07C25/00 ,  C07C43/184 ,  C07C43/205 ,  C07C43/21 ,  C07C69/92 ,  C07C255/45 ,  C07D213/30 ,  C07D237/08 ,  C07D237/14 ,  C07D237/16 ,  C07D237/18 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D241/12 ,  C07D241/18 ,  C07D285/12 ,  C07D285/125 ,  C07D285/13 ,  C07D405/12 ,  C09K19/20 ,  C09K19/30 ,  C09K19/34

Abstract: The novel cyclopropylalkyl or -alkenyl compounds have the general formula In this formula, the symbols A , A , A denote unsubstituted and in particular substituted (by halogen or CN) aromatic or heteroaromatic molecular building blocks, such as 1,4-phenylene or pyrimidine-2,5- diyl, which are linked via a single bond or via functional groups M , M , such as CO-O or CH2-O; H and m are zero or 1; j, l, n are zero, 1 or 2. The radicals are R , R , R are H or alkyl/alkenyl, R is alkyl/alkenyl or a substituent known from LC chemistry, such as an alpha - haloalkanoic acid radical. G denotes alkylene or alkenylene.

公开(公告)号：PT96647A

公开(公告)日：1991-10-31

申请号：PT9664791

申请日：1991-02-01

Applicant: HOECHST AG

Inventor： ILLIAN GERHARD ,  MULLER INGRID ,  HARADA TAKAMARA

IPC: C07C13/16 ,  C07C69/86 ,  C07C15/02 ,  C07C43/20 ,  C07C69/92 ,  C07C69/94 ,  C07C69/96 ,  C07D20060101 ,  C07D213/30 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D285/12 ,  C07D405/12 ,  C07D417/12 ,  C07F7/08 ,  C09K19/08 ,  C09K19/20 ,  C09K19/34 ,  C09K19/42 ,  C09K19/46 ,  G02F1/13 ,  C09K19/00

Abstract: PCT No. PCT/EP91/00129 Sec. 371 Date Jul. 24, 1992 Sec. 102(e) Date Jul. 24, 1992 PCT Filed Jan. 24, 1991 PCT Pub. No. WO91/11441 PCT Pub. Date Aug. 8, 1991.Geminal dimethylalkyl compounds, process for their preparation and their use in liquid-crystalline mixtures Geminal dimethylalkyl compounds of the formula (I) (I) in which: R1 is, for example, straight-chain or branched (with or without an asymmetric carbon atom) alkyl or alkenyl having 2 to 16 carbon atoms, A1, A2 and A3 are, for example, identical or different 1,4-phenylene, 1,4-cyclohexylene or pyrimidine-2,5-diyl, M1 and M2 are, for example, identical or different CO-O or O-CO, G is for example, identical or different straight-chain or branched alkylene having 1 to 16 carbon atoms, k, l, m and n are zero or 1, and R6 is straight-cain alkyl having 1 to 10 carbon atoms, can advantageously be employed in liquid-crystalline mixtures. In liquid-crystalline mixtures, said compounds result in a melting point depression, in a shift in the temperature limit of the Sc phase in ferroelectric mixtures and in other improvements of important electrooptical characteristic values.