WO1996019439A1 - Procede de preparation de pentene-nitriles - Google Patents
Procede de preparation de pentene-nitriles Download PDFInfo
- Publication number
- WO1996019439A1 WO1996019439A1 PCT/FR1995/001644 FR9501644W WO9619439A1 WO 1996019439 A1 WO1996019439 A1 WO 1996019439A1 FR 9501644 W FR9501644 W FR 9501644W WO 9619439 A1 WO9619439 A1 WO 9619439A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- zsm
- methylglutarimide
- precursors
- clays
- Prior art date
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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 process for the preparation of pentene-nitriles.
- Pentene-nitriles more particularly 3-pentene-nitria and 4-penten ⁇ -nitrile, can lead to adiponitrile by reaction with hydrogen cyanide.
- the invention consists of a process for the preparation of pentenitriles by the use in the vapor phase of 2-methylglutarimide and / or su-ethyl succinimide and / or their precursors, in the presence of an acidic solid catalyst chosen in particular among acid molecular sieves, acid clays, bridged clays (or pillared clays), mass oxides and acid phosphates.
- an acidic solid catalyst chosen in particular among acid molecular sieves, acid clays, bridged clays (or pillared clays), mass oxides and acid phosphates.
- 2-methylglutarimide and / or ethylsuccinimide can be prepared from methylglutaronitrile or ethylsuccinonitrile.
- 2-methylglutarimide can be used directly or in the form of one of its precursors, such as in particular 4-cyanovaleramide, 2-methyl 4-cyanobu yramide, 4-cyanovaleric acid, 2- acid methyl 4-cyanobutyric acid.
- ethylsuccinimide can be used directly or in the form of one of its precursors, such as in particular 3-cyanovaleramide, 2-ethyl 3-cyanopropionamide, 3-cyanovaleric acid, acid 2 -ethyl 3-cyanopropionic.
- 2-methylglutarimide and its precursors are the most important and preferred, in particular because of the higher proportion of methylglutaronitrile available as well as because of the better results than they provide.
- 2-methylglutarimide can be prepared, for example, by reaction of methylglutaronitrile with dodecanoic acid, as described in an article in Journal of Organic Chemistry, 36, pages 3050 et seq. (1971).
- the acid molecular sieves used are in particular the acid zeolites of pentasil structure, such as for example ZSM-5, ZSM-11, ZSM-12, ZS - 22, ZSM-23. ZSM-48, mordenite, ferrierite and acid zeolites of faujasite structure, such as for example zeolite X or zeolite Y.
- the zeolites of pentasil structure are more particularly the zeolites of type ZS -5, ZSM-12, ZS -11, ZSM-22, ZSM-23, ZSM-48, mordenit ⁇ and f ⁇ rrierite having the general formula (I) expressed in terms of oxide ratios:
- M represents an element chosen from hydrogen, NhL and the mono-, dh tri- and tetravalent metals, M being at least partly a hydrogen atom,
- - X represents a trivalent element chosen from AI, Ga, Fe and B,
- - n represents a number from 1 to 4,
- - m represents a number equal to or greater than 2
- - p represents a number from 0 to 40.
- the zeolites of faujasite structure are more particularly those having the general formula (II) expressed in terms of oxide ratios:
- - M represents an element chosen from hydrogen, NhL and the mono-, di-, tri-, and tetravalent metals, M being at least partly a hydrogen atom, - Z represents a trivalent element chosen from Al, Ga , Fe and B,
- - n represents a number from 1 to 4,
- - x represents a number from 5 to 100.
- the zeolites used in the context of the invention are preferably those in formula (I) or (II) in which the oxide associated with the silica is that of a trivalent metal, in particular Al or Ga.
- Acid zeolites are generally preferred in formula (I) or (II) of which M is chosen from hydrogen, NhL, alkali metals such as for example Na, K, ⁇ , Rb or Cs, alkaline earth metals such as for example Be, Mg, Ca, Sr or Ba, rare earth metals such as for example La or Ce, transition metals such as for example Fe.
- alkali metals such as for example Na, K, ⁇ , Rb or Cs
- alkaline earth metals such as for example Be, Mg, Ca, Sr or Ba
- rare earth metals such as for example La or Ce
- transition metals such as for example Fe.
- smectites such as for example montmorillonites, beidellites, nontronites, hectorites, stevensites and saponites.
- Bridged clays which can be used as catalysts in the present process, are clays between the sheets of which bridges or pillars have been introduced which maintain a basic spacing.
- the basal spacing is the sum of the thickness of a clay sheet and the interfoliar spacing.
- the bridging of clays can be carried out in particular using hydroxides of aluminum, vanadium, molybdenum, zirconium, iron, nobium, tantalum, chromium, lanthanum, cerium, titanium, gallium or mixed hydroxides of several of these metals.
- bridged clays can be modified, in particular by the action of a dihalogen, an ammonium halide or an acid such as sulfuric acid or hydrohalic acids.
- the halogen thus optionally introduced is preferably chlorine or fluorine.
- clays particularly beidellites, bridged with aluminum hydroxide are used in the process of the invention.
- the mass oxides are metal oxides, mixtures of metal oxides or modified metal oxides, in particular by the action of a dihalogen, an ammonium halide or an acid such as sulfuric acid or hydrohalic acids.
- the halogen thus optionally introduced is preferably chlorine or fluorine.
- SiO ALOg mixtures mention may be made of the SiO ALOg mixtures,
- halogenated aluminas such as in particular chlorinated aluminas and fluorinated aluminas, sulfated zirconia, niobium oxide or tungsten oxide.
- the acid phosphates which can be used in the process of the invention are in particular by way of examples the boron phosphates, alone or in mixture with alumina or with silica, corresponding to different molar ratios H 3 BO 3 / hLPO 4 introduced during synthesis, lanthanum phosphate, phosphates of aluminum corresponding to different molar ratios A Og / l-LPO. introduced during the synthesis.
- mixtures pentoxide of phosphorus silica (usually called UOP catalysts), aluminophosphates with zeolitic structure (AIPO) and silico-aluminophosphates with zeolitic structure (SAPO).
- the process is carried out continuously.
- the catalyst used can be placed in a fixed bed or be used in a fluidized bed. It can be used in mixture with inert solids, in order to increase the contact surface.
- the process is generally carried out at a temperature of 200 ° C to 600 ° C and preferably from 250 ° C to 500 ° C.
- the contact time defined as the ratio between the volume of the catalyst and the total gas flow rate (2-methylglutarimide and / or ethylsuccinimide and or their precursors + solvent if applicable + carrier gas if applicable) at the chosen temperature, usually varies from 0.1 seconds to 50 seconds and most often from 0.2 seconds to 10 seconds.
- the pressure is not critical. It is generally between a pressure below atmospheric pressure and 10 MPa (100 bar) and preferably between 0.01 MPa (0.1 bar absolute) and 5 MPa (50 bar). 2-methylglutarimide and / ethylsuccinimide and / or their precursors can be introduced into the reactor containing the catalyst, either in the molten state or in solution in a solvent which is substantially inert under the reaction conditions.
- any compound can be used which is vaporized under the reaction conditions, which does not induce harmful parasitic reactions and in which the substrate or substrates used are soluble.
- a substrate is considered to be soluble in a compound when it can be dissolved in an amount of at least 5 grams per liter of said compound at 50 ° C.
- nitriles such as acetonitrile, propionitrile, valeronitrile, adiponitrile or methylglutaronitrile
- ketones such as acetone, methyl isobutyl ketone
- ethers such as dibutyl ether, dimethoxyethane.
- Water can also serve as a solvent when precursors of 2-methylglutarimide or ethylsuccinimide are used.
- the inert gaseous vector can consist of a gas or a mixture of gases inert under the reaction conditions, such as for example nitrogen, argon.
- the substrate used in particular 2-methylglutarimide and / or its precursors, represents from 5% to 100% by weight relative to the total weight of the gases introduced into the reaction and preferably from 10% to 100%.
- the process of the invention generally leads to the formation of a mixture of pentene-nitriles, 2-pentene-nitrile, 3-pentene-nitrile and 4-pentene-nitril ⁇ . These last two pentene-nitriles can be transformed into adiponitrile, by reaction with hydrogen cyanide.
- quartz grains are successively charged (from
- the catalyst is then calcined overnight at 475 ° C.
- the reaction is carried out under a stream of nitrogen of 0.3 liters / hour at a temperature of 450 ° C. unless otherwise stated.
- the substrate in solution is then injected via a syringe pump.
- the injection rates will be specified for each example: they are expressed in grams of solution per hour.
- the actual test After starting up for approximately 1 hour, the actual test lasts 1 hour during which the products leaving the reactor are trapped in a series of three receptors, the first at room temperature, the following cooled by ice.
- the operating conditions are those given in the general operating mode described above.
- the concentration of 2-methylglutarimide in the solution injected is 15% w / w and the rate of injection of this solution is 3.5 g / h.
- the contact time (te) is indicated (in seconds) for each of the examples.
- Table 1 below collates the results obtained.
- the abbreviations MGI, PN, PN2, PN3, PN4 and MGN used have the following meanings:
- Example 13 350 Acetonitrile 22 9 9 0.8 6/71/23
- the operating conditions are those given in the general operating mode described above.
- the substrate concentration in the solution injected is 50% w / w and the injection rate of this solution is 1 g / h.
- the contact time (te) is indicated for each of the examples.
- the operating conditions are those given in the general procedure described above, but the tests are carried out with different concentrations of 2-methylglutarimide in the solution injected.
- the injection rate of these solutions is 3.5 g / h.
- the catalyst used is zeolite 2 (0.5 cm 3 ).
- the contact time (te) is indicated for each of the examples.
- the operating conditions are those given in the general procedure described above, with a catalyst volume of 1 cm 3 , a concentration of 2-methylglutarimide in the injected solution of 33% w / w, a nitrogen flow rate of 1 liter / hour, an injection rate of 1.5 g / h, using acetonitrile as solvent.
- the content of the traps is analyzed after the first hour of operation.
- Table 5 collates the results obtained: transformation rate (TT) of the substrate and yield (RR) into pentene-nitriles formed. Examples Catalyst TT% MGI RR% PN
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/849,923 US5834616A (en) | 1994-12-22 | 1995-12-12 | Process for the producing of pentenenitriles |
EP95942243A EP0799190A1 (fr) | 1994-12-22 | 1995-12-12 | Procede de preparation de pentene-nitriles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9415728A FR2728566B1 (fr) | 1994-12-22 | 1994-12-22 | Procede de preparation de pentene-nitriles |
FR94/15728 | 1994-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996019439A1 true WO1996019439A1 (fr) | 1996-06-27 |
Family
ID=9470297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1995/001644 WO1996019439A1 (fr) | 1994-12-22 | 1995-12-12 | Procede de preparation de pentene-nitriles |
Country Status (6)
Country | Link |
---|---|
US (1) | US5834616A (fr) |
EP (1) | EP0799190A1 (fr) |
CN (1) | CN1070473C (fr) |
CA (1) | CA2208254A1 (fr) |
FR (1) | FR2728566B1 (fr) |
WO (1) | WO1996019439A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010500317A (ja) * | 2006-08-08 | 2010-01-07 | ビーエーエスエフ ソシエタス・ヨーロピア | 1,3−ブタジエンのヒドロシアン化による3−ペンテンニトリルの製造方法 |
US10899722B2 (en) * | 2017-02-28 | 2021-01-26 | Bayer Cropscience Aktiengesellschaft | Process for the preparation of fluoroalkylnitriles and the corresponding fluoroalkyltetrazoles |
CN110841702B (zh) * | 2019-11-12 | 2022-06-17 | 常州大学 | 一种用于合成芳香腈催化剂的制备方法和芳香腈的合成方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2149280A (en) * | 1937-05-29 | 1939-03-07 | Du Pont | Preparation of aromatic dinitriles |
US2203861A (en) * | 1938-05-27 | 1940-06-11 | Du Pont | Preparation of aromatic nitriles |
DE1015426B (de) * | 1954-08-11 | 1957-09-12 | Basf Ag | Verfahren zur Herstellung von ªÏ-ungesaettigten Carbonsaeurenitrilen |
EP0267438A2 (fr) * | 1986-10-14 | 1988-05-18 | BASF Aktiengesellschaft | Procédé pour la préparation de nitriles insaturés |
EP0571298A1 (fr) * | 1992-05-20 | 1993-11-24 | RHONE-POULENC FIBER & RESIN INTERMEDIATES | Procédé de déshydrocyanation de dinitriles aliphatiques |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3510876A1 (de) * | 1985-03-26 | 1986-10-02 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von aliphatischen dinitrilen |
JPH03220166A (ja) * | 1989-11-30 | 1991-09-27 | Mitsui Toatsu Chem Inc | α,β―不飽和ニトリルの製造方法 |
-
1994
- 1994-12-22 FR FR9415728A patent/FR2728566B1/fr not_active Expired - Fee Related
-
1995
- 1995-12-12 CA CA002208254A patent/CA2208254A1/fr not_active Abandoned
- 1995-12-12 US US08/849,923 patent/US5834616A/en not_active Expired - Fee Related
- 1995-12-12 WO PCT/FR1995/001644 patent/WO1996019439A1/fr not_active Application Discontinuation
- 1995-12-12 CN CN95196943A patent/CN1070473C/zh not_active Expired - Fee Related
- 1995-12-12 EP EP95942243A patent/EP0799190A1/fr not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2149280A (en) * | 1937-05-29 | 1939-03-07 | Du Pont | Preparation of aromatic dinitriles |
US2203861A (en) * | 1938-05-27 | 1940-06-11 | Du Pont | Preparation of aromatic nitriles |
DE1015426B (de) * | 1954-08-11 | 1957-09-12 | Basf Ag | Verfahren zur Herstellung von ªÏ-ungesaettigten Carbonsaeurenitrilen |
EP0267438A2 (fr) * | 1986-10-14 | 1988-05-18 | BASF Aktiengesellschaft | Procédé pour la préparation de nitriles insaturés |
EP0571298A1 (fr) * | 1992-05-20 | 1993-11-24 | RHONE-POULENC FIBER & RESIN INTERMEDIATES | Procédé de déshydrocyanation de dinitriles aliphatiques |
Non-Patent Citations (4)
Title |
---|
CHEM. IND., no. 7, pages 270 * |
CHEMICAL ABSTRACTS, vol. 101, no. 3, 16 July 1984, Columbus, Ohio, US; abstract no. 22606, RAO, A. V. RAMA ET AL page 529; * |
D. A. KLEIN: "Nitrile Synthesis via the acid-nitrile exchange reaction", JOURNAL OF ORGANIC CHEMISTRY, vol. 36, no. 20, EASTON US, pages 3050 - 3051 * |
F. BECKE, T. F. BURGER: "Über die Einwirkung von Carbonsäuren auf Nitrile", LIEBIGS ANNALEN DER CHEMIE, vol. 716, WEINHEIM DE, pages 78 - 82 * |
Also Published As
Publication number | Publication date |
---|---|
CN1070473C (zh) | 2001-09-05 |
CN1170403A (zh) | 1998-01-14 |
FR2728566B1 (fr) | 1997-01-24 |
FR2728566A1 (fr) | 1996-06-28 |
CA2208254A1 (fr) | 1996-06-27 |
US5834616A (en) | 1998-11-10 |
EP0799190A1 (fr) | 1997-10-08 |
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