Método de producción de oxima de cicloalcanona

    公开(公告)号:ES2526796T3

    公开(公告)日:2015-01-15

    申请号:ES12832790

    申请日:2012-06-26

    Abstract: Un método de producción de una oxima de cicloalcanona por medio de una reacción fotoquímica de un cicloalcano un agente de foto nitrosación en un líquido por medio de irradiación de luz, usando el método una fuente de luz configurada para emitir luz que cumple las condiciones de que, en una distribución de energía de emisión con respecto a la longitud de onda de la luz, la longitud de onda a la cual la energía de emisión tiene un valor máximo está dentro de un intervalo de 550 nm a 700 nm y el intervalo continuo de longitud de onda que incluye la longitud de onda a la cual la energía de emisión tiene un valor máximo y que genera una energía de un 5 % o más de intensidad con respecto al valor máximo es igual a o menor de 150 nm, en donde la distancia de irradiación en el líquido es igual a o mayor de 200 nm, y la concentración del agente de foto nitrosación en el líquido es de un 0,1 % en moles a un 0,5 % en moles.

    Método para producir oxima de cicloalcanona

    公开(公告)号:ES2788329T3

    公开(公告)日:2020-10-21

    申请号:ES13810555

    申请日:2013-03-29

    Abstract: Un método de producción de una oxima de cicloalcanona mediante una reacción fotoquímica de un cicloalcano con un agente fotonitrosante en un líquido por medio de irradiación de luz, en el donde el método usa una fuente de luz configurada para emitir luz satisfactoria en condiciones que, en una distribución de energía de emisión con respecto a la longitud de onda de la luz, una longitud de onda que proporciona un valor máximo de energía de emisión está en un intervalo de 550 nm a 700 nm y un intervalo de longitud de onda continua que incluye la longitud de onda que proporciona el valor máximo y la energía de salida de o más del 5 % del valor máximo es igual o inferior a 150 nm, en donde una relación ηE/V entre una energía de irradiación de luz ηE de la entrada de energía eléctrica E en la fuente de luz y un volumen de reacción V que es un volumen de un espacio para la reacción fotoquímica del cicloalcano con el agente fotonitrosante es igual o mayor de 5,5 w/l e igual o menor de 15,0 w/l; en donde la longitud de onda que proporciona el valor máximo de la energía de emisión está en un intervalo de 600 nm a 650 nm.

    METHOD FOR PRODUCING CYCLOALKANONE OXIME
    4.
    发明公开
    METHOD FOR PRODUCING CYCLOALKANONE OXIME 审中-公开
    用于生产环烷酮

    公开(公告)号:EP2868655A4

    公开(公告)日:2016-01-27

    申请号:EP13810555

    申请日:2013-03-29

    CPC classification number: C07C249/06 B01J19/122 B01J2219/1203 C07C251/44

    Abstract: The invention provides a production method of a cycloalkanone oxime by photonitrosation method using, as the light source, light emitting diodes which are the light source for the next generation as a replacement for an electric discharge lamp in which mercury, sodium or the like is enclosed. There is provided a production method of a cycloalkanone oxime by a photochemical reaction of a cycloalkane with a photo nitrosating agent in a liquid by light irradiation. The method uses a light source configured to emit light satisfying conditions that, in an emission energy distribution with respect to wavelength of the light source, a wavelength providing a maximum value of emission energy or peak intensity is in a range of 550 nm to 700 nm and a wavelength range outputting energy of or over 5% intensity of the peak intensity is equal to or less than 150 nm. A ratio ·E/V of a light irradiation energy ·E out of electric power E input into the light source to a reaction volume V for the light irradiation is equal to or greater than 5.5 w/L.

    PRODUCTION OF DL-LYSINE
    6.
    发明专利

    公开(公告)号:JPS6445349A

    公开(公告)日:1989-02-17

    申请号:JP20212587

    申请日:1987-08-13

    Abstract: PURPOSE:To obtain DL-lysine useful as a basic salt-forming agent for an acidic drug such as aspirin, with economical means in high purity, by racemizing an optically active lysine and treating with a free acid. CONSTITUTION:1mol. (2 equivalent) of an optically active lysine is racemized at 130-200 deg.C by using 0.4-5 times weight of water in the presence of 1-2 equivalent of an acid (e.g. hydrochloric acid). To improve the quality of the product, the racemization reaction liquid is added with 2.1-3 equivalent [based on 1mol. (2 equivalent) of lysine] of an acid (e.g. hydrochloric acid) and treated with the acid at 120-180 deg.C. If necessary, the reaction product is subjected to activated carbon treatment for removing coloring impurities, ion exchange treatment to remove the acid and obtain free DL-lysine, etc.

    PRODUCTION OF LACTAM
    7.
    发明专利

    公开(公告)号:JP2001002636A

    公开(公告)日:2001-01-09

    申请号:JP16879399

    申请日:1999-06-15

    Abstract: PROBLEM TO BE SOLVED: To directly obtain a lactam without causing formation of ammonium sulfate as a by-product and without separating an oxime by carrying out the synthesis of the lactam from a cycloalkane as a starting raw material using a solvent except the cycloalkane in the absence of sulfuric acid. SOLUTION: A mixture of (A) a perhalogenated nitrosoalkane (preferably trichloronitrosomethane) and (B) a cycloalkane (preferably cyclohexane or cyclododecane) is irradiated with light rays in the absence of sulfuric acid in an organic solvent (preferably chloroform) to give a lactam. Trichloronitrosomethane obtained by photonitrosation of nitrosyl chloride and chloroform is preferable as the component A. The light irradiation is preferably carried out under reduced pressure or normal pressure at 0-30 deg.C by light at 400-600 nm. Consequently, the rearrangement can be carried out without separating a cycloalkanone oxide of intermediate to give directly the lactam.

    PRODUCTION OF TRICHLORONITROSOMETHANE AND PRODUCTION OF LACTAM

    公开(公告)号:JP2001002625A

    公开(公告)日:2001-01-09

    申请号:JP16879499

    申请日:1999-06-15

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing trichloronitrosomethane by which the compound is produced while reducing the required amount of nitrosyl chloride, and the removal of the remaining nitrosyl chloride after stopping the reaction is facilitated by carrying out the stirring of a liquid during the irradiation of light by using a specific method when carrying out the photoreaction of the nitrosyl chloride with chloroform. SOLUTION: The stirring of a liquid during the irradiation of light is carried out by the stirring by the blowing or jetting of an inert gas when carrying out the photonitrosation of (A) nitrosyl chloride with (B) chloroform to provide the objective trichloronitrosomethane. The reaction is carried out by dissolving the component A in the component B having combined two roles of the reagent and the solvent, and irradiating the obtained solution with the light of 400-600 nm, preferably 500-600 nm at 0-30 deg.C preferably under a normal pressure. The amount of the component A dissolved in the component B is preferably 0.5-30 g/L, more preferably 5-15 g/L. The inert gas includes a gas inert to the reaction of the components A and B (e.g. hydrogen chloride gas) besides the inert gas such as nitrogen.

    DEPOLYMERIZATION OF NYLON 6
    9.
    发明专利

    公开(公告)号:JP2000178249A

    公开(公告)日:2000-06-27

    申请号:JP28123399

    申请日:1999-10-01

    Abstract: PROBLEM TO BE SOLVED: To obtain caprolactam in good yield without causing various kinds of problems by controlling the amount of sticking chlorides to a prescribed value or below according to a simple means such as washing with water when depolymerizing a thermoplastic material consisting essentially of nylon 6 and containing the alkali(ne earth) metal chlorides sticking thereto with an acidic catalyst. SOLUTION: When a thermoplastic material consisting essentially of nylon 6 (preferably containing >=90 wt.% of the nylon 6) and containing an alkali metal chloride and/or an alkaline earth metal chloride sticking thereto is preferably washed with water and then depolymerized with an acidic catalyst (preferably a phosphoric acid catalyst) to afford caprolactam, the amount of the sticking chlorides is controlled so as to be an equivalent amount of

    PRODUCTION OF 3,5-DICHLOROCUMENE
    10.
    发明专利

    公开(公告)号:JPH01319444A

    公开(公告)日:1989-12-25

    申请号:JP15088788

    申请日:1988-06-17

    Abstract: PURPOSE:To obtain the subject compound in high yield by carrying out the alkylation and isomerization of m-dichlorobenzene with easily and inexpensively available propylene under a condition satisfying a specific restricted relationship between the feeding amount of the raw material, pressure of hydrogen chloride, reaction temperature, etc. CONSTITUTION:3,5-Dichlorocumene is produced by alkylating m-dichlorobenzene with 0.2-1.0 times mol of propylene in the presence of aluminum chloride catalyst under hydrogen chloride pressure under a condition to satisfy the relationships of the formula I [C is weight ratio of aluminum chloride/propylene; T is reaction temperature ( deg.C); P is pressure of hydrogen chloride (kg/cm )], formula II, formula III and formula IV at the same time. The alkylation reaction proceeds in high efficiency by this process to give 2,4-dichlorocumene in high yield. Furthermore, the isomerization reaction is smoothly performed and the process is industrially advantageous. The product is useful as an intermediate for agricultural chemicals.

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