WO1993002046A1 - Process for producing nitrile - Google Patents
Process for producing nitrile Download PDFInfo
- Publication number
- WO1993002046A1 WO1993002046A1 PCT/JP1992/000928 JP9200928W WO9302046A1 WO 1993002046 A1 WO1993002046 A1 WO 1993002046A1 JP 9200928 W JP9200928 W JP 9200928W WO 9302046 A1 WO9302046 A1 WO 9302046A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- producing nitrile
- aldoxime
- reaction
- reaction system
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
Definitions
- the present invention relates to a method for easily producing a nitrile useful as a raw material for organic synthesis of a fragrance, a fragrance, a pharmaceutical or the like in a low yield.
- an object of the present invention is to provide a method for producing nitrile, which has a high yield and is extremely advantageous from the viewpoint of production economics.
- the present invention relates to a hydroxide of an alkali metal, an alcoholate of an alkali metal, In the presence of one or more catalysts selected from earth metal ice oxides and alkaline earth metal alcoholates, the following general formula (2)
- R is an alkyl group which may have a substituent, an alkenyl group which may have a substituent, an aralkyl group which may have a substituent or a group which may have a substituent. (Represents a reel group)
- the aldoxime represented by the formula is heated, and water generated as the reaction proceeds is distilled out of the reaction system.
- the present invention is represented by the following reaction formula.
- the present invention provides an alkali metal hydroxide, an alkali metal alcoholate, an alkaline earth metal hydroxide and a lithium earth metal alcoholate in the presence of at least one catalyst selected from the group consisting of:
- the nitrile represented by the general formula (1) is produced by heating the aldoxime represented by the general formula (2) and distilling water generated as the reaction progresses out of the reaction system.
- the group represented by R preferably has 3 to 20 carbon atoms.
- specific examples of the alkyl group include a heptyl group, a nonyl group, a pendyl group, a lauryl group, a myristyl group and the like.
- the alkenyl group may contain two or more double bonds. Specific examples thereof include a 2,6-dimethyl-1,5-diheptagenyl group and a 2,6-dimethyl-15-heptenyl group. Is mentioned.
- specific examples of the aralkyl group include a 2-phenyl group and a 2-styryl group.
- Specific examples of the aryl group include a phenyl group and a methyl group. And a phenyl group and a dimethylphenyl group.
- examples of the substituent contained in these groups include a cyano group, a hydroxyl group, a carbonyl group, a nitro group, a carbonyloxy group, a carbonyl group, and a halogen atom.
- the raw compound used in the present invention i.e., rhodoxime (2)
- rhodoxime (2) can be obtained, for example, by reacting the corresponding aldehyde with an inorganic salt of hydroxylamine according to a conventional method.
- the catalyst used in the reaction includes an alkali metal hydroxide, an alkali metal alcoholate, an alkali metal carbonate, an alkali metal bicarbonate, and an ice oxidation of an alkaline earth metal.
- an alkali metal hydroxide an alkali metal alcoholate, an alkali metal carbonate, an alkali metal bicarbonate, and an ice oxidation of an alkaline earth metal.
- One or two or more selected from the group consisting of an alkali metal, an alkaline earth metal carbonate, an alkaline earth metal carbonate, and an alkaline earth metal bicarbonate can be used as appropriate.
- sodium propoxide, lithium butoxide, sodium carbonate, sodium carbonate, lithium carbonate, calcium carbonate, magnesium carbonate, sodium hydrogen carbonate, sodium hydrogen carbonate, lithium hydrogen carbonate, etc. Can use more than species
- hydroxides of alkali metal, alcohols of alkali metal, hydroxides of alkaline earth metal and alcoholates of alkaline earth metal are considered from the viewpoint of reaction yield. It is preferable to use sodium hydroxide, and more preferably, from the viewpoint of manufacturing economy, sodium hydroxide and hydroxide hydroxide.
- these catalysts are preferably used in a total amount of 0.1 to 50% by weight, and particularly preferably 0.1 to 5% by weight, based on the starting compound, rhodoxime (2). If the amount of catalyst used is less than 0.1% by weight, the yield of nitrile decreases, and even if the amount of catalyst used exceeds 50% by weight, the effect is less than that within 50% by weight. Little improvement is gained.
- the reaction temperature for obtaining nitril (1) from terdoxime (2) is preferably from 80 to 200.
- a hand for distilling the elongation generated as the reaction progresses out of the reaction system! is not particularly limited, but, for example, means for azeotropic removal using a solvent capable of azeotroping with water, means for removing by distillation under reduced pressure and evaporating the reaction system, etc. No.
- Examples of the solvent that can be azeotropic with water include benzene, toluene, xylene, chlorobenzene, heptane and the like.
- aldoxime (2) is produced by supplying aldoxime (2) at a reaction temperature under reduced pressure in a mixed solution of a boiling point solvent and the catalyst.
- a means for sequentially distilling ice is preferred.
- the boiling point solvent include solvents having a boiling point higher than that of nitrile (1) as a reaction product, for example, liquid paraffin, alkylbenzene and the like.
- the reaction for obtaining ditolyl (1) from aldoxime (2) is usually carried out under normal pressure if the above-mentioned azeotropic solvent is used to remove water by azeotropic distillation.
- azeotropic solvent used to remove water by azeotropic distillation.
- Heptanoxime 50 g
- hydroxylated water (2 g) and toluene (2) were charged into a 200-milliliter four-liter flask equipped with a stirrer, a thermometer and a Dean-Stark dehydrator. While the mixture was azeotropically distilled together with the mixture, stirring was continued at 120 for 2 hours, followed by cooling to 30 to 40 :. Then, after neutralization with acetic acid, toluene was distilled off and distillation was carried out. As a fraction (910 g Hg), 36.8 g was obtained. I got Analysis of this fraction showed a purity of 98.7%, a yield of 83%, a conversion of 97% and a selectivity of 86.? %, It was found that heptanotritol was formed.
- Example 1 A reaction was conducted in the same manner as in Example 1 except that 1 g of each of the compounds shown in Table 1 was used as the basic catalyst, and 50 g of the compound shown in Table 1 was used as the raw material aldoxime to produce nitrile.
- Table 1 shows the nitrile, yield, tilling rate, and selectivity obtained in each example.
- the production method of the present invention can provide a nitrile useful as a raw material for organic synthesis of a fragrance or a fragrance, a pharmaceutical, etc. in a high yield and extremely advantageously from a production economic viewpoint. It can be expected to be used extensively in such fields.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92915837A EP0550762B1 (en) | 1991-07-25 | 1992-07-21 | Process for producing nitrile |
DE69206250T DE69206250T2 (de) | 1991-07-25 | 1992-07-21 | Verfahren zur herstellung von nitrilen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3/186227 | 1991-07-25 | ||
JP18622791 | 1991-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993002046A1 true WO1993002046A1 (en) | 1993-02-04 |
Family
ID=16184586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1992/000928 WO1993002046A1 (en) | 1991-07-25 | 1992-07-21 | Process for producing nitrile |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0550762B1 (ja) |
AT (1) | ATE130599T1 (ja) |
DE (1) | DE69206250T2 (ja) |
ES (1) | ES2079877T3 (ja) |
WO (1) | WO1993002046A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5892092A (en) * | 1997-09-04 | 1999-04-06 | Basf Aktiengesellschaft | Preparation of aliphatic, unsaturated nitriles |
JP2010180142A (ja) * | 2009-02-03 | 2010-08-19 | Kuraray Co Ltd | シクロヘキサンカルボニトリルの製造方法 |
WO2013176088A1 (ja) | 2012-05-21 | 2013-11-28 | 高砂香料工業株式会社 | ニトリルの製造方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5457222A (en) * | 1991-07-25 | 1995-10-10 | Kao Corporation | Process for producing nitrile |
EP0731086B1 (de) * | 1995-03-09 | 1999-04-28 | Ciba SC Holding AG | Verfahren zur Herstellung aromatischer Nitrile |
US5763638A (en) * | 1996-02-15 | 1998-06-09 | Ciba Specialty Chemicals Corporation | Preparation of aromatic nitriles |
JP3561178B2 (ja) * | 1999-06-02 | 2004-09-02 | 花王株式会社 | ニトリルの製造方法 |
DE102004029812A1 (de) | 2004-06-19 | 2006-05-24 | Clariant Gmbh | Verfahren zur Herstellung von Nitrilen aus Aldehydoximen durch Umsetzung mit Alkylphosphonsäureanhydriden |
EP3443950A1 (en) | 2014-07-30 | 2019-02-20 | Symrise AG | A fragrance composition |
WO2021228352A1 (en) | 2020-05-11 | 2021-11-18 | Symrise Ag | A fragrance composition |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5896053A (ja) * | 1981-12-02 | 1983-06-07 | Sumitomo Chem Co Ltd | ニトリル類の製造法 |
-
1992
- 1992-07-21 WO PCT/JP1992/000928 patent/WO1993002046A1/ja active IP Right Grant
- 1992-07-21 DE DE69206250T patent/DE69206250T2/de not_active Expired - Fee Related
- 1992-07-21 ES ES92915837T patent/ES2079877T3/es not_active Expired - Lifetime
- 1992-07-21 AT AT92915837T patent/ATE130599T1/de not_active IP Right Cessation
- 1992-07-21 EP EP92915837A patent/EP0550762B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5896053A (ja) * | 1981-12-02 | 1983-06-07 | Sumitomo Chem Co Ltd | ニトリル類の製造法 |
Non-Patent Citations (4)
Title |
---|
CHEMICAL ABSTRACTS, Vol. 100, No. 1, Abstract No. 100(1) : 6009q, 1984 (Columbus, Ohio, US), A. ORAZIO et al., Synthesis, (9), 741-2, 1983. * |
CHEMICAL ABSTRACTS, Vol. 105, No. 3, Abstract No. 105(3) : 24029d, 1986 (Columbus, Ohio, US), STENBERG JOHN R., Chem. Ind. (Dekker), 22 (Catal. Org. React.), 373-9, 1985. * |
CHEMICAL ABSTRACTS, Vol. 109, No. 9, Abstract No. 109(9) : 72976q, 1988 (Columbus, Ohio, US), K. KIYOTOMI et al., Chem. Lett., (2), 285-6, 1988. * |
CHEMICAL ABSTRACTS, Vol. 82, No. 7, Abstract No. 82(7) : 43035a, 1975 (Columbus, Ohio, US), ROGIC MILORAD M. et al., J. Org. Chem., 39(23), 3424-6, 1974. * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5892092A (en) * | 1997-09-04 | 1999-04-06 | Basf Aktiengesellschaft | Preparation of aliphatic, unsaturated nitriles |
EP0902012A3 (de) * | 1997-09-04 | 2002-08-14 | Basf Aktiengesellschaft | Verfahren zur Herstellung aliphatischer, ungesättigter Nitrile |
JP2010180142A (ja) * | 2009-02-03 | 2010-08-19 | Kuraray Co Ltd | シクロヘキサンカルボニトリルの製造方法 |
WO2013176088A1 (ja) | 2012-05-21 | 2013-11-28 | 高砂香料工業株式会社 | ニトリルの製造方法 |
US9233916B2 (en) | 2012-05-21 | 2016-01-12 | Takasago International Corporation | Method for producing nitrile |
Also Published As
Publication number | Publication date |
---|---|
ATE130599T1 (de) | 1995-12-15 |
EP0550762A4 (ja) | 1994-03-23 |
EP0550762A1 (en) | 1993-07-14 |
EP0550762B1 (en) | 1995-11-22 |
ES2079877T3 (es) | 1996-01-16 |
DE69206250D1 (de) | 1996-01-04 |
DE69206250T2 (de) | 1996-05-02 |
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