http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0593997-A1

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filingDate 1993-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_44bb11455beffb1bb59b1ad6ab3eeea0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_816b6e02e64c3325ed7c67fafbcd6c69
publicationDate 1994-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber EP-0593997-A1
titleOfInvention Fluor substituted phenyl-cyclohexyl acetylenes and liquid crystals mixtures containing them
abstract R Alkyl, Alkoxy, Alkenyl oder Alkenyloxy mit 1 bzw. 2 bis 12 Kohlenstoffatomen bedeutet, in welchen eine CH₂-Gruppe durch Sauerstoff und/oder eines oder mehrere Wasserstoffatome durch Fluoratome ersetzt sein können, mit der Massgabe, dass zwei Sauerstoffatome nicht direkt benachbart sind; A¹ 1,4-Phenylen, Pyridin-2,5-diyl, Pyrimidin-2,5-diyl, trans-1,4-Cyclohexylen oder trans 1,3-Dioxan-2,5-diyl darstellt; A² trans-1,4-Cyclohexylen oder gegebenenfalls mit Fluor substituiertes 1,4-Phenylen bedeutet; Z¹ eine einfache Kovalenzbindung, -CH₂CH₂-, -OCH₂-, -CH₂O-, -(CH₂)₄-, -O(CH₂)₃-, -(CH₂)₃O- oder, falls Ring A¹ einen gesättigten Ring darstellt, auch die trans-Form von -CH=CH(CH₂)₂- oder -CH=CHCH₂O- bedeutet; Z² eine einfache Kovalenzbindung, -CH₂CH₂-, -OCH₂-, -CH₂O-, -(CH₂)₄-, -O(CH₂)₃-, -(CH₂)₃O-, oder die trans-Form von -CH=CH(CH₂)₂- oder -CH=CHCH₂O- bedeutet; n 0 oder 1 bedeutet; m 0 oder 1 bedeutet, mit der Massgabe, dass n+m ≦ 1 ist und X Cyano, -CF₃, -OCF₃, -OCHF₂, -CH=CF₂, Alkyl, Alkenyl, Alkoxy, Alkenyloxy oder Alkoxyalkyl mit 1 bzw. 2 bis 6 Kohlenstoffatomen, oder an trans-1,4-Cyclohexylen auch -CH=CHF oder -CH=CHCl, oder an 1,4-Phenylen auch Fluor oder Chlor bedeutet, deren Herstellung, flüssigkristalline Gemische , die solche Verbindungen enthalten, sowie die Verwendung dieser Verbindungen bzw. Gemische für elektro-optische Zwecke.The present invention relates to fluorine-substituted phenyl-cyclohexylacetylenes of the general formula wherein R Means alkyl, alkoxy, alkenyl or alkenyloxy having 1 or 2 to 12 carbon atoms, in which a CH₂ group may be replaced by oxygen and / or one or more hydrogen atoms by fluorine atoms, with the proviso that two oxygen atoms are not directly adjacent; A¹ 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, trans-1,4-cyclohexylene or trans 1,3-dioxane-2,5-diyl; A² means trans-1,4-cyclohexylene or 1,4-phenylene optionally substituted with fluorine; Z¹ a simple covalent bond, -CH₂CH₂-, -OCH₂-, -CH₂O-, - (CH₂) ₄-, -O (CH₂) ₃-, - (CH₂) ₃O- or, if ring A¹ represents a saturated ring, also the trans -Form of -CH = CH (CH₂) ₂- or -CH = CHCH₂O-; Z² a simple covalent bond, -CH₂CH₂-, -OCH₂-, -CH₂O-, - (CH₂) ₄-, -O (CH₂) ₃-, - (CH₂) ₃O-, or the trans form of -CH = CH (CH₂ ) ₂- or -CH = CHCH₂O-; n Represents 0 or 1; m 0 or 1 means that n + m ≦ 1 is and X Cyano, -CF₃, -OCF₃, -OCHF₂, -CH = CF₂, alkyl, alkenyl, alkoxy, alkenyloxy or alkoxyalkyl with 1 or 2 to 6 carbon atoms, or on trans-1,4-cyclohexylene also means -CH = CHF or -CH = CHCl, or on 1,4-phenylene also fluorine or chlorine, their preparation, liquid-crystalline mixtures containing such compounds, and the use of these compounds or mixtures for electro-optical purposes.
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