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7629476 |
Method for producing 2,5-dimethylphenyl acetic acid
The invention relates to a method for preparing 2,5-dimethylphenylacetic acid by converting p-xylene with chloroacetyl chloride into 2-chloro-1-(2,5-dimethylphenyl)ethanone, which is reacted with...
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7612243 |
Cyclopenta[b]naphthalene derivatives
The present invention relates to cyclopenta[b]naphthalene derivatives to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising at least one...
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7531695 |
Therapeutic agents for the treatment of cancer, metabolic diseases and skin disorders
The present invention is directed to compounds having the structure (I) wherein R 1 , R 2 , R 3 , R 4 , R 5 and m are as defined herein. The compounds of this invention are novel therapeutic...
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7354893 |
Acetals, use thereof as fragrances and methods for production thereof
An acetal of formula I:
is described in which
the radicals R 1 to R 6 independently of one another are eac hydrogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl or...
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7351452 |
Liquid crystalline compounds containing a biphenyl core
A compound of formula (I)
or a dimer thereof; where R 1 and R 2 are independently selected from optionally substituted alkyl, optionally substitituted alkenyl, optionally substituted...
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7329637 |
Methylene dioxy octahydroindene derivatives
The present invention is directed to a novel dioxin compound and the use of the novel compound in creating fragrances, and scents in items such as perfumes, colognes and personal care products.
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7321052 |
Process for production of a composition useful as a fuel
A process for the preparation of a fuel oil (diesel fuel or heating oil) composition which is a mixture of an alkanol tranesterified fatty acid ester triglyceride and an acetal of glycerol is...
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7271296 |
Method for the production of phytofluene
The invention relates to a process for preparing phytofluene of the formula I,
where
a) a phosphonium salt of the formula II is condensed with an aldehyde of the formula III
...
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7189863 |
Process for producing trifluoromethyl-substituted 2-alkoxyacetophenone derivatives
A process for producing a brominated acetal (represented by the formula 3) includes (a) brominating a trifluoromethyl-substituted acetophenone by Br 2 in the presence of an alkylene diol. It is...
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7097887 |
Liquid crystal compounds
The use of a compound of formula (I)
wherein R 1 is an alkyl or alkenyl group, either of which may be optionally interposed with one or more oxygen or sulphur atoms, R 2 is an alkyl or...
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7081279 |
Alkenyl compound having a negative Δε value, liquid crystal composition, and liquid crystal display device
Liquid crystalline compounds having a large negative Δε low viscosity, a large K 33 /K 11 value, a small Δε/Δ⊥ and mutually excellent solubility even at low temperature, compositions...
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7074464 |
Perfluoropropenyl-containing compound, liquid crystal composition and liquid crystal display element
A compound represented by the formula (1).
wherein Ra is alkyl having 1 to 10 carbon(s) and, in that alkyl, any of —CH 2 — may be replaced with —O—, —S—, —CO—, —CH═CH— or...
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7074462 |
Ester compounds and their use in liquid crystalline media
The invention relates to compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises...
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7029730 |
CF2O-bridged, axially substituted cyclohexane derivatives
The invention relates to CF 2 O-bridged cyclohexane derivatives, in particular compounds of formula (I), R1-(-A1-Z1-)k1-Q-CF2O-A2-(-Z3-A3-)K3-R2, wherein Q represents group (a); W 1 , W 2 ...
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7014890 |
Fluorinated naphthalenes, liquid-crystal mixtures comprising them, and liquid-crystal displays
Compounds of the formula (I)
in which the parameters are as defined herein, are suitable for use in liquid-crystal media and liquid-crystal displays which contain these media.
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7001647 |
Perfluoroallyloxy compound and liquid crystal composition containing the same
A novel perfluoroallyloxy compound represented by general formula (I) and a liquid crystal composition containing the compound are disclosed. The perfluoroallyloxy compound is useful as a liquid...
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6962767 |
Acetal compound, polymer, resist composition and patterning process
Acetal compounds in which a 5- or 6-membered ring acetal structure is connected to a norbornene structure through a linker represented by —(CH 2 ) m — in which one hydrogen atom may be...
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6908645 |
Liquid-crystalline medium
The invention relates to liquid-crystalline compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more...
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6872502 |
Chemically amplified negative photoresist, and photoresist composition
A polymer for a chemically amplified negative photoresist and a photoresist composition are provided. A representative polymer of the invention is a compound of formula 5:
wherein: R 1 ...
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6864225 |
Cyclic ketals, fragrance compositions containing the same and methods of using the same
Compounds of the general formula (I) are described:
wherein each of R 1 , R 2 , R 3 , R 4 , R 5 and R 6 independently represents a substituent selected from the group consisting of hydrogen,...
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6844032 |
Liquid crystal compounds having bis(trifluoromethyl) phenyl rings, liquid crystal compositions and liquid crystal display devices
The compound (1) having 2,3-bis(trifluoromethyl)-1,4-phenylene is stable chemically and has excellent miscibility with other liquid crystal compounds, large and negative dielectric anisotropy and...
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6808762 |
Oxabicyclooctanes
The present invention relates to oxabicyclooctanes of the general formula I. in which R 1 , R 2 , A 1 , A 2 , A 3 , A 4 , L 1 , L 2 , n1, n2 and n3 have the meanings specified in claim 1, and to...
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6759103 |
Fluorinated cyclopenta&lsqb b&rsqb naphthalenes and their use in liquid-crystal mixtures
The invention relates to compounds of the formula (I) and also liquid-crystal mixtures comprising these compounds, and their use in liquid-crystal displays: in which R 1 is H, F, CF 3 , OCF 3 ,...
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6737125 |
Fluorinated cyclopenta&lsqb a&rsqb naphthalenes and their use in liquid-crystal mixtures
Compounds of the formula (I), liquid-crystal mixtures comprising these compounds, and their use in liquid-crystal displays: in which R 1 is H, F, CF 3 , OCF 3 , OCF 2 H, OCFH 2 , an alkyl...
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6730803 |
Synthetic intermediate for epothilone derivative and production method thereof
The β-keto ester compound, β-hydroxy acid compound and acetonide form of a 1,3-diol derivative of the formulas (I), (V) and (VIII) wherein each symbol is as defined in the specification, are...
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6692657 |
Alkenyl compound having a negative &Dgr &egr value, liquid crystal composition, and liquid crystal display device
Liquid crystalline compounds having a large negative Δ∈ low viscosity, a large K 33 /K 11 value, a small Δ∈/Δ⊥ and mutually excellent solubility even at low temperature, compositions...
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6685995 |
Ester compounds, liquid crystal compositions and liquid crystal display devices
Liquid crystalline compounds suitable for driving at a low voltage and at a wide temperature range, and suitable for high speed response, liquid crystal compositions comprising the compound, and...
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6649227 |
Difluorovinyl compound, liquid crystal composition and liquid crystal display
Provided are liquid crystalline compounds having a wide liquid crystal phase temperature range, low viscosity, a large elastic constant ratio K 33 /K 11 and excellent solubility at low...
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6632484 |
Dialkyne compounds
Described are dialkyne compounds of the formula I in which n, m, R 1 , R 2 , X 1 , X 2 , X 3 , X 4 , Z 1 , Z 2 , A 1 , A 2 , Q, Y 1 and Y 2 are as defined herein and the use of such compounds...
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6630210 |
Pentafluorosulfuranylbenzene derivatives
The invention relates to pentafluorosulfuranylbenzene derivatives of the formula I in which R 1 , A 1 , A 2 , Z 1 , L 1 , L 2 , L 3 and n are as defined herein and to the use thereof in...
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6620468 |
Dioxane derivatives, and liquid-crystalline medium
The invention relates to novel dioxane derivatives of the formula I R 1 —(A 1 —Z 1 ) m —A 2 —C 2 F 4 —A 3 —(Z 2 —A 4 ) n —R 2 I in which R 1 , R 2 , A 1 , A 2 , A 3 , A 4 , Z 1 ,...
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6616990 |
Chiral 1, 3-dioxane compounds
The present invention relates to chiral 1,3-dioxane compounds and diastereomers thereof of the general formula I where R 1 , R 2 and R 3 are as defined in the description, and the use of these...
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6610892 |
Process for preparing 2,7-dimethyl-2,4,6-octatrienal monoacetals
The invention relates to a process for preparing 2,7-dimethyl-2,4,6-octatrienal monoacetals of the general formula I which comprises a) condensing an ester phosphonium salt of the general...
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6576303 |
Liquid crystal compounds exhibiting negative anisotropy of permittivity
Novel liquid crystal compound having a negative and absolutely large value of dielectric anisotropy, being excellent in compatibility with other liquid crystalline compounds at a low temperature...
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6555685 |
Process for the production of purine derivatives and intermediates therefor
A process for preparing purine derivatives, such as famiciclovir and penciclovir, by reacting, in the presence of a palladium (0) catalyst and a ligand, a compound of the formula with a compound...
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6544604 |
Liquid crystalline compound having difluoropropyleneoxy group as bonding group, liquid crystal composition and liquid crystal display element
The present invention provides a liquid crystalline compound having a difluoropropyleneoxy group as a bonding group, which is represented by Formula (1): wherein R 1 and R 2 each independently...
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6500503 |
Cyclohexane derivatives, liquid crystal compositions comprising the same and liquid crystal display devices
Liquid crystalline compounds are disclosed which have large dielectric anisotropy and relatively low viscosity, and which are represented by formula (1) wherein R 1 represents hydrogen or C 1...
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6482565 |
Photoresist cross-linker and photoresist composition comprising the same
The present invention relates to a cross-linker for use in a photoresist which is suitable for a photolithography process using KrF (248 ru), ArF (193 nm), E-beam, ion beam or EUV light source....
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6476240 |
Monomer and a polymer obtained therefrom
This invention relates to a monomer shown by the general formula [1] (wherein X′ is a cyclic hydrocarbon residue containing polymerizable double bond(s), which may have a substituent, Z is a...
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6458433 |
Difluorophenyl derivatives, liquid-crystal compounds, and liquid-crystal composition
Disclosed are liquid crystalline compounds which (i) are characterized in that the compounds have a wide temperature range in which the compounds exhibit a liquid crystal phase, are low in...
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6444279 |
Liquid crystal propene or propenyl nitrile derivatives
Acetylene derivatives of the formula I in which R, A 1 , A 2 , Z 1 , Z 2 , Z 3 , L 1 , L 2 , L 3 , Y, m and n are as defined herein are suitable as components of liquid-crystalline media.
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6444278 |
2,6-di-tert-butylphenols
The present invention relates to 2,6-di-tert-butylphenols of the formula I in which R, A 1 A 2 , Z 1 , Z 2 m and n are as defined herein, and their use as stabilizers or antioxidants.
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6372693 |
Substituted 2-(3-alkenyl-benzoyl)-cyclohexane-1,3-diones
The invention relates to 2-(3-alkenylbenzoyl)cyclohexane-1,3-diones of the formula I where the variables have the following meanings: R 1 , R 2 are hydrogen, nitro, halogen, cyano, thiocyanato,...
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6365755 |
Ammonium 3,5,6-trihydroxyhexanoate derivatives and preparation process thereof
Provided are a novel ammonium (3R,5S)-3,5,6-trihydroxyhexanoate derivative represented by the following formula (I): wherein R 1 represents a benzyl group which may have a substituent, a...
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6348606 |
Cyclic dienol ethers
The claimed invention relates to cyclic dienol ethers of formula (III). wherein R 3 is hydrogen and R 4 is C 1-4 alkoxy or R 3 and R 4 together form an optionally substituted methylenedioxy...
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6348244 |
Liquid-crystal compounds having large negative value of permittivity anisotropy, liquid-crystal composition, and liquid-crystal display element
An object of the present invention is to provide novel liquid crystalline compounds having a negative and extremely large dielectric anisotropy value and a small optical anisotropy value together,...
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6337034 |
Vinylene compounds and liquid-crystal composition
Liquid crystalline compounds which have a wide temperature range of liquid crystal phase, low viscosity, and improved threshold voltage; liquid crystal compositions; and liquid crystal display...
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6333082 |
Liquid crystalline (E,E)-butadiene compounds and mixtures and devices containing such compounds
Liquid crystalline compounds useful in super twisted nematic liquid crystal displays are described and have the formula: ##STR1## wherein n is 1-5; m is 0-5; p is 0, 1 or 2; q is 0, 1...
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6329027 |
Chlorobenzene derivatives, liquid-crystal composition, and liquid-crystal display elements
Provided are liquid crystalline compounds having excellent physical properties and being excellent in miscibility with other liquid crystal materials; liquid crystal compositions comprising the...
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6303194 |
Acetylene derivatives, and liquid-crystalline medium
The invention relates to acetylene derivatives of the formula I ##STR1## in which n, m, R 1 , R 2 , X 1 , X 2 , X 3 , X 4 , Z 1 , Z 2 , A 1 , A 2 , Q, Y 1 and Y 2 are as defined below, wherein...
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