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JPH09124521A |
To easily produce trans-cyclohexanecarbaldehydes useful as a synthetic raw material for liquid crystal compounds in high yield by reacting cyclohexanecarbaldehydes rich in cis isomer with a basic compound. Cyclohexanecarbaldehydes expres...
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JP2600107B2 |
PURPOSE: To simply obtain a halofluoro compound in good yield using an inexpensive and readily handleable solid fluorinating agent by reacting an alkene together with a halonium ion generator with a metallic hydrofluoride as the fluorina...
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JPH0987210A |
To obtain a low-viscosity new compound excellent in liquid crystal nature, and useful as a liquid crystal material of quick responsiveness corresponding to higher-speed-and-higher-performance liquid crystal display elements. This new com...
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JPH0977702A |
To obtain a new fluorine-containing olefin which is useful as a monomer for polymers and as an intermediate for a variety of fluorine-containing compounds, for example, hydrofluorocarbons, medicines and agrochemicals. This fluorine-conta...
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JP2589702B2 |
A blood substitute employs combinations of fluoro or perfluorochemicals capable in the presence of emulsifying agents of forming emulsions stable at room temperature and possessing enhanced oxygen carrying capacity.
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JP2587902B2 |
PURPOSE: To obtain a new 1-phenylbicyclo[2,2,2]octane compound useful for the treatment of arthritis and inflammatory phenomenon due to denaturation of acute phase protein. CONSTITUTION: The compound of formula I [R1 is a halogen, OH, 1-...
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JPH0956395A |
To industrially advantageously obtain the subject compound having high optical purity and useful for an anti-HIV medicine intermediate, etc., by reacting trans-(±)-2-bromoindan-1-ol with an ester in an organic solvent in the presence of...
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JPH0930989A |
To provide a new and efficient process for producing a biaryl derivative useful as pharmaceuticals, agrochemicals and electrooptical liquid crystal display materials. A biaryl derivative expressed by formula Ar-Ar' (Ar and Ar' are each a...
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JPH0925251A |
To continuously produce a compound useful as an alkylating agent for introducing cyclopentyl group used for producing medicines and agrochemicals in good yield and selectivity in a simple mode. One mol, preferably 0.1-2mol cyclopentene i...
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JP2562421B2 |
PURPOSE: To use, as a working fluid for a heat pump system, a specific fluorinated hydrocarbon which contains no chlorine, is excellent in environmetal protection, and can be prepd. at a high purity and economically in a high yield witho...
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JP2561988B2 |
Near-azeotropic blends of hydrofluorocarbons are disclosed which have utility as replacements for refrigerant 502. They are blends of pentafluoroethane (HFC-125) and 1,1,1-trifluoroethane (HFC-143a) with 1,1,1,2,3,3,3-heptafluoropropane ...
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JP2561354B2 |
Derivatives of benzocycloalkenyldihydroxyalkanoic acids, inhibitors of HMG CoA reductase, antagonists of thromoboxane A2 receptors and antifungals, denoted by the formula I 1 in which X=CH2, O or S; R1 and R2, identical or different, =H,...
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JP2554455B2 |
PURPOSE: To obtain a near-azeotropic composition having a reduced ozone depletion potential, maintaining a vapor pressure and flame retardancy over a wide composition and being useful as a substitute for R-502 by blending specified fluor...
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JPH08283183A |
To obtain the subject new compound having good chemical, photochemical and thermal stability, or the like, further having a low viscosity, a short response time, a low threshold potential or the like, and useful for electro-optical devic...
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JPH08245441A |
PURPOSE: To obtain an electrochemically stable liquid crystal compound large in Δ value, and highly compatible with existing liquid crystal compounds, to obtain a liquid crystal composition containing this compound, and to obtain a liqu...
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JP2534627B2 |
PURPOSE: To provide a propellant gas which comprises a specific fluorinated hydrocarbon, does not destroy the ozone layer, is noncombustible, and is useful for medical apparatus, heat pump systems, etc. CONSTITUTION: This propellant gas ...
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JP2530757B2 |
PURPOSE: To effectively execute the removing/attaching of the selected parts by utilizing a state changing medium and supporting an electronic circuit module to a work positioning mechanism. CONSTITUTION: The selected fluid to a solder i...
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JPH08208529A |
PURPOSE: To obtain an optically active alkylaryl compound while maintaining the optical purity of its starting substance by effecting catalytic hydrogenation of an aryl ketone in an organic solvent in the presence of a reduction catalyst...
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JPH08173818A |
To obtain a zeolite catalyst having a good regeneration characteristic by adding to zeolite an oxide or a salt of an element of the group II or the main-group III elements or a mixture thereof. An oxide or a salt of an element of the gro...
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JP2513758B2 |
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JPH08505859A |
PCT No. PCT/EP93/03658 Sec. 371 Date Sep. 15, 1995 Sec. 102(e) Date Sep. 15, 1995 PCT Filed Dec. 22, 1993 PCT Pub. No. WO94/17018 PCT Pub. Date Aug. 4, 1994A fullerene derivative of the formula I where the symbols and indices have the fo...
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JP2505907B2 |
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JPH0830073B2 |
Chlorination of carbohydrates and alcohols utilizing a chlorinating reagent selected from triphenylphosphine oxide/ thionyl chloride, thiphenylphosphine oxide/phosgene, triphenylphosphine sulfide/thionyl chloride and triphenylphosphine s...
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JPH085818B2 |
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JPH083075A |
PURPOSE: To carry out purification and produce a liquid capable of being heated with scarcely generating HF, excellent in stability, safety, etc., and useful as, e.g. a liquid for electronic components by bringing a fluorine-based inacti...
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JPH07108975B2 |
Novel terphenyls having a relatively high clearing point and which are suitable for use in liquid crystal materials or in the preparation of compounds for use in such material are characterised by a formula:wherein:R, is selected from H,...
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JPH07106996B2 |
Saturated, fluorine-containing and chlorine-free hydrocarbons are prepared by catalytic hydrogenation of unsaturated, fluorine- and chlorine-containing hydrocarbons at temperatures above 80 DEG C in the gas phase.
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JPH07291876A |
PURPOSE: To obtain a new cyclopentadiene compound being an electron- transporting acceptor compound and useful for electrophoto-graphic photoreceptor, etc., having high sensitivity and good durability. CONSTITUTION: A compound of formula...
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JPH07100673B2 |
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JPH07278029A |
PURPOSE: To obtain an azeotropic composition improved in cleaning force and flame retardancy and being small in breakage of ozone layer. CONSTITUTION: This azeotropic composition is obtained by combining cis-1,1,2,2,3,4-hexafluorocyclobu...
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JPH07252169A |
PURPOSE: To obtain a tetracyclododecene derivative in high conversion and selectivlty by continuously supplying a (di)cyclopentadiene compound, an olefin compound and an intermediate product to a piston-flow reactor and subjecting the co...
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JPH07508705A |
An alkylative cycloaddition method is provided that is particularly useful for the synthesis of many of the Vitamin D analogues with differing side chains. Thus, a preferred synthesis is of Vitamin D analogues having a side chain R1 wher...
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JPH07206733A |
PURPOSE: To obtain a new halohydrocarbon useful as a raw material for perfumes by halogenating a new hydrocarbon synthesized from, as raw material, norbornadiene readily available in large quantities. CONSTITUTION: This halohydrocarbon i...
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JPH07179365A |
PURPOSE: To provide a process for fluorinating an organic substance in an inert liquid medium. CONSTITUTION: A process for producing a fluorinated organic substance is provided which comprises the steps of: (A), providing a reaction syst...
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JPH07173085A |
PURPOSE: To obtain a tetracyclododecene derivative composition containing a specific norbornene ring compound and useful for metathesis ring-opening polymerizations. CONSTITUTION: This tetracyclododecene derivative composition comprises ...
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JPH07165625A |
PURPOSE: To produce a new compound useful for a liquid crystal material capable of remarkably improving a problem about crystal deposition in a range of low temperatures by admixing therein without reducing, e.g. the electro-optic proper...
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JPH07505122A |
Active methine compounds are chlorinated by contacting such compounds with a perchloroalkane and aqueous base in the presence of a phase transfer catalyst which is an tetraalkylonium hydroxide. Chlorinated products, preferably tertiary a...
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JPH07138197A |
PURPOSE: To obtain a new dihydronaphthalene-based compound useful as a liquid crystal composition for liquid displays, etc., and excellent in stability of a nematic phase, physicochemical stability, low viscosity and refractive index ani...
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JPH0739358B2 |
Novel terphenyls having a relatively high clearing point and which are suitable for use in liquid crystal materials or in the preparation of compounds for use in such material are characterised by a formula:wherein:R, is selected from H,...
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JPH0733341B2 |
Fluorinated C4- to C6-hydrocarbons are prepared by hydrogenating corresponding, at least partially halogenated olefins catalytically in the presence of a base.
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JPH0733340B2 |
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JPH0729984B2 |
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JPH07502728A |
Compounds having acidic protons and a molecular structure which can delocalize the electron density of the conjugate base (target compounds) are chlorinated by contacting such compounds with a perchloroalkane and aqueous base in the pres...
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JPH0776536A |
PURPOSE: To provide a new halogenated vinyl derivative useful as a raw material for a liquid crystal compound having conjugated enyne bond in the molecule and producible with simple procedures. CONSTITUTION: A halogenated vinyl derivativ...
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JPH0762336A |
PURPOSE: To obtain a refrigerant composition which does not cause ozonosphere depletion, can substitute for conventional refrigerants without changing the existing equipment and is noncombustible. CONSTITUTION: This composition comprises...
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JPH0717548B2 |
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JPH0717547B2 |
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JPH072709A |
PURPOSE: To obtain new various perfluorinated ethyldimethyl derivatives of cyclohexane valuable as inert stable boiling fluids required for the manufacture and examination of electronic parts in electronic secondary processing industry. ...
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JPH06102643B2 |
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JPH06510297A |
A catalyic process is disclosed for producing fluorine-substituted hydrocarbon products of the formulae RCH2CF2R and RFC=CHR at an elevated temperature, from compounds of the formula RCHFCHFR, where each R is independently selected from ...
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