• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A process for preparing alpha , omega -dicarboxylic acids of the formula HOOC-(CH2)n-COOH in which n=6 to 10 is disclosed. The process consists of the catalytic oxidation of a compound of formula X-(CH2)n-CHO wherein X is CHO or COOH and n is 6 to 10 by O2 pure or in mixture with inert gas, possibly under pressure, in at least one polar solvent, at a temperature comprised between 20 DEG and 90 DEG C. and in the presence of a catalyst. The catalyst is chosen from the group consisting of at least one cobalt (II) salt and one ferrous salt. The amount of the catalyst is </=0.001 mol % calculated on the equivalents of the aldehyde groups in the starting compound.
    公开号:SU969150A3
    申请号:SU792839762
    申请日:1979-11-06
    公开日:1982-10-23
    发明作者:Сиклари Франческо；Паоло Росси Пьер；Канавези Луиджи
    申请人:Сниа Вискоза Сочиета Национале Индустриа Аппликациони Вискоза С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    This goal is achieved by obtaining oC, δ-dicarboxylic acids of the general formula (CH2) n-COOH (O where n 6-10, which is that the corresponding aldehyde is subjected to oxidation with oxygen or air iodine pressure of 1-10 atm in medium -, a clear solvent, for example, in an 85% aqueous solution of acetic acid or a 95% native solution of propionic acid at 20–85 ° C. and in the presence of a catalyst — cobalt (II) acetate or iron (II) acetate or a mixture thereof Isl by weight, and the specified catalyst is taken with respect to the corresponding al d 0.000125-, 0.001 mol% in terms of equivalents of the aldehyde group in the original compound, Example 1-16. acid, placed in a glass autoclave .. The temperature is increased to 60 C. The amount of catechizer added — Co (II) acetate tetryhydrate, iron (II) acetate, or a mixture of them — is in the range of 0.001-0,000125% on the cation with respect to the equivalents of aldehyde groups present in the starting compound ). The mixture is stirred with a magnetic stirrer and oxygen is absorbed under pressure, changing cadims from atmospheric to 10 atm, and the pressure is measured with an absorption gasometer. The absorption of O is 90-103% of theory. The thus obtained dodecane dihydrate is crystallized from the solution by cooling and then filtered. The filtrate is evaporated to dryness. Process conditions are listed in the table. The yield is the yield of the oxidation reaction, as measured by chromatographic analysis on the basis of a precipitated substance or residue. . Examples 13-16 (comparative) ,. Carried out as in Examples 1-13, however, the catalyst is used in an amount greater than 0.001 mol.% Based on equivalents of aldehyde groups present-, in the starting compound o or b. Example 17. 200 g-formylundecanoic acid dissolved in 1800 MP of 85% aqueous acetic acid / is loaded into the autoclave described in examples 1-16. The temperature in the autoclave is adjusted to 85 ° C and 0.0008 mol eq of cobalt acetate trihydrate per 100 mol is added. aldehyde groups present in tt-formyl-alkanoic acid. Supporting the re-stirring in the autoclave, I laugh and let in air at a speed of 200 l / h and maintain a pressure of 5 atm. After 4 h, the autoclave is cooled and the reaction product is discharged. The product is analyzed as described in examples 1-16 and yield 96.5% of 1,12-dodecanedioic acid relative to the loaded) -formyl-alkano &amp; acid. M.p. 122124 C. Example 18. Repeat prune 17, except as in; The starting material used was 121.5 g of 5-formylpentanoic acid, 120U g of a 95% aqueous solution of propionic acid was used as a solvent, and the oxidative reaction was carried out with air for 6 hours at 45 ° C (pressure 5 atm), Anschiz the resulting product gives a 95% yield of adipic acid.
    Dekamethylene di-tetrahydrate aldehyde addetate cobalt (I I)
    Also
    Also
    0.000500 101.1 97.0 121-124 0,000500 100.0 92.0 117-121
    权利要求:
    Claims (1)
    [1]
    Claim
    A process for preparing c1, idikarbonov1yh iooe acids of general formula (fn. G) n -COOH (wherein η = 6-10, which comprises oxidizing with oxygen or air under a pressure of 1-10 atm appropriate aldehyde in a medium of concentrated aqueous solution of acetic or propionic acid at 20 8fF C in the presence of cobalt acetate (fl) or iron (II) acetate or a mixture of 1: 1 by weight as a catalyst, characterized in that, in order to increase the yield of the target product, 45 catalyst is taken in relation to the corresponding aldehyde in an amount of 0 , 000125-0.001000 mol.% Based on e vivalent aldehyde group in the starting compound.
    fifty '
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    同族专利:
    公开号 | 公开日
    FR2441605A1|1980-06-13|
    GB2034310A|1980-06-04|
    ES485773A1|1980-07-01|
    BE879937A|1980-05-09|
    DE2945004A1|1980-05-22|
    US4791228A|1988-12-13|
    DE2945004C2|1991-08-29|
    NL7908011A|1980-05-13|
    IT1100096B|1985-09-28|
    FR2441605B1|1982-12-10|
    JPS6220974B2|1987-05-11|
    JPS5589241A|1980-07-05|
    IT7829682D0|1978-11-10|
    GB2034310B|1982-12-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CA568088A|1958-12-30|Everett R. Lashley, Jr.|Method for oxidizing glutaraldehydes|
    US2777865A|1953-01-12|1957-01-15|Kessler Chemical Co Inc|Oxidation of fatty acids|
    FR1219655A|1958-04-05|1960-05-19|Consortium Fuer Elektro Chemis|Process for the preparation of aliphatic dicarboxylic acids|
    US3043872A|1958-11-07|1962-07-10|Union Carbide Corp|Decolorization method for pimelic acid|
    JPS4823422B1|1970-04-09|1973-07-13|
    US3804895A|1972-01-21|1974-04-16|Us Agriculture|Preparation of carboxy alkanoic acids and esters|
    IT1049005B|1975-10-30|1981-01-20|Snia Viscosa|PROCEDURE FOR THE PREPARATION OF ALFA OMEGA DICHARBOXYL ACIDS|DE3628662A1|1986-08-23|1988-03-03|Degussa|METHOD FOR PRODUCING 1,12-DODECANDEIAEUR I|
    DE59009653D1|1989-12-14|1995-10-19|Chemie Linz Gmbh|Process for the preparation of alpha-omega-alkanedicarboxylic acids.|
    AT402293B|1994-09-06|1997-03-25|Chemie Linz Gmbh|METHOD FOR PRODUCING MONO- OR DICARBONIC ACIDS FROM ALDEHYDES, THEIR FULL ACETALS OR HALBACETALS, AND FROM MIXTURES THEREOF|
    DE10010771C1|2000-03-04|2001-05-03|Celanese Chem Europe Gmbh|Production of aliphatic carboxylic acid, e.g. n-butyric, 2-methylbutyric, n-heptanoic or isononanoic acid, by oxidizing corresponding aldehyde uses group 5-11 metal or compound as catalyst|
    US9604898B2|2012-07-19|2017-03-28|P2 Science, Inc.|Ozonolysis operations for generation of reduced and/or oxidized product streams|
    EP3094615A4|2014-01-13|2017-11-08|P2 Science, Inc.|Terpene-derived acids and esters and methods for preparing and using same|
    WO2015196019A1|2014-06-20|2015-12-23|P2 Science, Inc.|Film ozonolysis in a tubular or multitubular reactor|
    US10668446B2|2016-06-21|2020-06-02|P2 Science, Inc.|Flow-through reactors for the continuous quenching of peroxide mixtures and methods comprising the same|
    EP3512631A4|2016-09-16|2020-05-13|P2 Science, Inc.|Uses of vanadium to oxidize aldehydes and ozonides|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT29682/78A|IT1100096B|1978-11-10|1978-11-10|PROCEDURE FOR THE PREPARATION OF ALPHA, OMEGA-DICHARBOXYL ACIDS|
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