PREPARATION OF 2-OXAZOLIDONE DERIVATIVE BY PHOTOCHEMICAL CARBON DIOXIDE IMMOBILIZATION METHOD

    公开(公告)号:JPH0399070A

    公开(公告)日:1991-04-24

    申请号:JP23600389

    申请日:1989-09-12

    Abstract: PURPOSE:To prepare the subject compound useful as a raw material or intermediate for drugs such as anticonvulsants by reacting an ethanolamine derivative with carbon dioxide in the presence of a photosensitizer, a thiol, a phosphine, a tertiary amine and oxygen. CONSTITUTION:An ethanolamine derivative (e.g. 3-amino-1-phenylethanol) is reacted with carbon dioxide in the presence of a tertiary amine (e.g. triethylamine) in a solvent such as acetonitrile at the room temperature, mixed with a photosensitizer [e.g. tris(2,2'-bipyridinyl)ruthenium (II) chloride], a phosphine (e.g. tri-n-butyl phosphine) and a thiol (e.g. thiphenol) and subsequently irradiated with light to provide the objective compound wherein a reaction vessel contacting with air is employed. The immobilization of the carbon dioxide permits to reduce the concentration of the carbon dioxide in the atmosphere, prevent the warming of the earth and provide substances having high additional values.

    PRODUCTION OF CYCLIC URETHANE COMPOUND

    公开(公告)号:JPH0692945A

    公开(公告)日:1994-04-05

    申请号:JP26926792

    申请日:1992-09-11

    Abstract: PURPOSE:To provide the method for producing a cyclic urethane compound by reacting an aminoalcohol with carbon dioxide. CONSTITUTION:An aminoalcohol is reacted with carbon dioxide in the presence of a tertiary amine, a trivalent organic phosphorus compound and an organic halide compound to produce the cyclic urethane compound. The method can provide the cyclic urethane compound at the ordinary temperature under the ordinary pressure in a high yield. Further, the chemical fixation of the carbon dioxide and the treatment of the organic halide compound can simultaneously be performed.

    PRODUCTION OF AROMATIC CARBOXYLIC ACID

    公开(公告)号:JPH0472085A

    公开(公告)日:1992-03-06

    申请号:JP18119690

    申请日:1990-07-09

    Abstract: PURPOSE:To produce aromatic carboxylic acid having high additional value from carbon dioxide with rather low voltage and high current efficiency by effecting the electrochemical reaction of aromatic ketone and carbon dioxide in the presence of specified cluster. CONSTITUTION:The reaction of aromatic ketone and carbon dioxide is effected on electrodes in the presence of iron-sulfur cluster expressed by formula (1) or molybdenum-iron-sulfur cluster expressed by formula (2) or (3). In the formula (1), R is phenyl group, benzyl group or tertiary butyl group, X is tetramethylammonium group or tetraethylammonium group, and n is 1, 2, 3 or 4. In the formulae (2), (3), R is phenyl group, benzyl group or ethyl group, X is same as in the formula (1), and n is 2,3,4 or 5. These clusters act as a catalyst for electron movement, and thereby, efficient reaction is possible at a low electric voltage. Thereby, carbon dioxide can be efficiently fixed, which produces aromatic carboxylic acid.

    METHOD AND APPARATUS FOR CONVERTING ENERGY USING GAS SELECTING PERMEABLE MATERIAL

    公开(公告)号:JPS61291779A

    公开(公告)日:1986-12-22

    申请号:JP13377385

    申请日:1985-06-19

    Abstract: PURPOSE:To utilize effectively energy by producing differential pressure between gas components through a gas selecting permeable material and converting this differential pressure to energy easy to utilize. CONSTITUTION:An upper portion of a container 1 is constituted from a gas selecting permeable material 2 like polyimide resin film reinforced with a perforated glass for example. This container 1 is disposed in the atmosphere which makes the gas selecting permeable material 2 less permeable, and gas component GA such as permeable carbon dioxide, herium, neon, is enclosed in the container 1. this gas component GA permeates through said material 2 to produce differential pressure between the atmosphere and the interior of the container 1 to pump up water into the container 1 through a pipe with this differential pressure.

Patent Agency Ranking