• 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 METHOD FOR OBTAINING S-CONFIGURATED SUBSTITUTED PHENYL-PROPANOL of the general formula B - (Ng-clH-cH2 · · hH OH3 where R is hydrogen or methoxyl, hydrogen, tert-butyl, tert-butoxyl or methoxyl, characterized by the fact that (-) target compounds, the corresponding substituted cinnamon aldehyde is subjected to microbiological hydrogenation using the yeast Saccharomyces cerevisiae CO: at 1040 ° C under the influence of aeration with water in the presence of sucrose, followed by extraction of the resulting product with methylene chloride and separation target product by evaporation. from 00 JV
    公开号:SU1098519A3
    申请号:SU813229955
    申请日:1981-01-14
    公开日:1984-06-15
    发明作者:Мартин Кристов；Химмеле Вальтер；Зигель Хардо
    申请人:Басф Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to new methods for producing S-configured substituted phenylpropanol, which can be used to produce effective fungicides, for example, 1-t3-C l-tert-butylphenyl) -2-m-3-3-cis-3, 5-dimethylmorpholine. To obtain this fungicide, various substituted phenylpropanol are used. Various chemical processes are known for the preparation of unsubstituted and substituted phenylpropanol. Thus, unsubstituted phenylpropanol is obtained by reduction of cinnamic aldehyde using sodium borohydride, stabilized with a 10% methanol solution of alkali or using lithium aluminum hydride tl. 1, 2-dimethylpropanol, by hydrogenating with hydrogen or 3- (p-tert-butylphenyl) -2-methylacroylin in aqueous alkaline solution in the presence of palladium catalysis and calcium hydroxide, followed by conversion the obtained substituted propionaldehyde by hydrogenation on palladium on carbon in an alcohol medium into the target substituted propanol C 2. However, there is no information on the specific configuration of the obtained compound. ; The conversion of cinnamic acid esters to dimethoxystyrenes and dimethoxypropanol is known to depend on the configuration around the double bond, i.e., a compound of the formula (.iK2 where hydrogen1 is carboxyl-, there are two configurations E and Z, and the E-configuration is decarboxylated, the Z-configuration remains without changes, and the restoration of the double bond to alcohol proceeds through the intermediate formation of aldehyde 3 However, for the E-configuration, the effect of biological agents on hydrogenation is not predictable in advance. compounds using biological agents, for example, microbiological hydrogenation of compounds both by double bond and various functional groups to alcohols C. However, mainly aliphatic compounds are used as objects of hydrogenation, and aromatic aldehydes are reduced very poorly. superior to microbiological and last used only in cases where complex structures are used, not susceptible to chemical recovery . In the case of non-branched unbranched compounds, microbiological hydrogenation does not provide the desired result. The purpose of the invention is to develop a microbiological process for the preparation of S-configured substituted phenylpropanol, which is more convenient for its preparation of (-) - enantiomers, which are more active compounds compared to (+) - enantiomers. The goal is achieved by the method of obtaining S-configured substituted phenylpropanol of the general formula, OH, I / I is hydrogen or methoxyl, R is hydrogen, tert-butyl, tertbutoxyl or methoxyl, by microbiological hydrogenation of the corresponding cinnamic aldehyde using Saccharomyces cerevisiae at 10-40 C under the influence of aeration with air in the presence of sucrose, followed by extraction of the resulting product with methylene chloride and the evaporation of the target product. The proposed method, under fairly simple conditions, provides for the hydrogenation of both the unsaturated bond and the aldehyde group, with the methoxyl and tert-butoxy groups present in certain cases not affected. Products are formed as (-) - enantiomers. It should be noted that for yeast, a carbon source is needed, which
    is introduced in the form of sucrose, ibr. In this case, the microorganisms remain active for a long time.
    The fermentation medium may contain inorganic salts and growth-promoting substances - vitamins. The medium should have, in general, 3-8, and the initial product should be in the form of 0.1-5% concentration. The fermentation time varies widely (5-200 hours).
    Example 1. Method for preparing (8) -3- (p-tert-butylphenyl) -2-methyl-propanol.
    In pure non-sterilized, equipped with a Mesh fermenter (6 l), distilled water is loaded with 1.8 sucrose 90 g, pressed Saccharomyces cerevisiae yeast 200 r, 3- (h-tert-butylphenyl) -2-methyl-2-propenal-1 8 g, ethanol 30 ml, anti-foam; Silicone-based gel 2g.
    The fermentation process is carried out at a stirring speed of 500 rpm, a temperature of 30 ° C, a degree of aeration with air for 1 hour by volume of air per volume of culture liquid in minutes and a process time of 52.5 hours
    At the end of the process, the cell mass is centrifuged (separated from the nutrient medium), both phases are extracted with methylene chloride, the combined extracts are dried (Na-SO) and evaporated in vacuo. The residue is distilled to give 4.1 g of (51Z) (S) -J- (i-t-butnlphenyl) -2-methylpropanol-1 with a bp. 120-122.C / 0.7 mbar d -7.64. Using NMR, it was found that the product consists of one (-) - enantiomer.
    Example 2. Substitutes are prepared (the phenylpropanol structure of which is indicated in the table. The same table shows the structures of the starting compounds, as well as the amount in grams, the percentage yield of the target product, its boiling point.
    The process is carried out in a round bottom flask with a stirrer at a stirring speed of 300 rpm.
    The initial mixture contains: distilled water 300 MP, sucrose 50 g dry Saccharomyces cerevisiae 30 g. - After a 15-minute fermentation, 1.5 g of the original non-saturated aldehyde is loaded and incubated for 24 hours. Then the culture mixture is extracted three times with methylene chloride, the extract is dried and evaporated first at normal pressure and then under vacuum.
    The structure of these compounds is similar in appearance to the anantiomer substance of Example 1.
    Thus, the proposed method provides obtaining (-) - enantiomer.
    s1NGON. 0.43
    72-76 ° C / 0.3 mbar
    28
    A-dH2 cJHzOH
    CJH L X
    1.41 EZ
    Not defined
    (Jh,
    e o
    -fYdH 24
    .N "V-YNg
    s5nz
    n,
    -fl-d /, dH
    B-dH dHaOH
    OSSN
    Table continuation
    n
    130-140 ° C /
    82 / 0.6 mbar
    147-152 ° C /
    9) / o, 7 mbar
    权利要求:
    Claims (1)
    [1]
    METHOD FOR PRODUCING S-CONFIGURATED SUBSTITUTED PHENYL PROPANOL of general formula where R’ is hydrogen or methoxy,
    R M is hydrogen, tert-butyl, tert-butoxyl or methoxyl, characterized in that, in order to obtain (-) enantiomers of the target compounds, the corresponding substituted cinnamaldehyde is subjected to microbiological hydrogenation with Saccharomyces cerevisiae yeast: in case of IOAO ^ under the influence of aeration by air in the presence of sucrose, followed by extraction of the resulting product with methylene chloride and the selection of the target product by evaporation.
    SU <„, 1098519
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    引用文献:
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    DE1275041B|1966-01-28|1968-08-14|Basf Ag|Process for the preparation of ª ‡ -hydroxyisopropylbenzenes|
    GB1330652A|1970-01-16|1973-09-19|Catomance Ltd|1-aryloxy-2-propanols|
    BE790086A|1971-10-15|1973-04-13|Thomae Gmbh Dr K|4- -1-BUTANOL|
    CH596122A5|1973-08-20|1978-02-28|Sandoz Ag|
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    DE2405004C3|1974-02-02|1979-11-29|Haarmann & Reimer Gmbh, 3450 Holzminden|Deodorants|
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    法律状态:
    优先权:
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