BE511928A - - Google Patents
Info
- Publication number
- BE511928A BE511928A BE511928DA BE511928A BE 511928 A BE511928 A BE 511928A BE 511928D A BE511928D A BE 511928DA BE 511928 A BE511928 A BE 511928A
- Authority
- BE
- Belgium
- Prior art keywords
- tube
- bis
- formaldehyde
- methylene
- hydrochloric acid
- Prior art date
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- JFDZBHWFFUWGJE-UHFFFAOYSA-N Benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 claims description 6
- -1 boron phosphate-zinc oxide Chemical compound 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- YZYDPPZYDIRSJT-UHFFFAOYSA-K Boron phosphate Chemical compound [B+3].[O-]P([O-])([O-])=O YZYDPPZYDIRSJT-UHFFFAOYSA-K 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 229910000149 boron phosphate Inorganic materials 0.000 claims description 4
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- DDMYFISYTGHXDW-UHFFFAOYSA-N (carboxyamino)methylcarbamic acid Chemical class OC(=O)NCNC(O)=O DDMYFISYTGHXDW-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- ZRITXBQKZLRSRX-UHFFFAOYSA-N 2-[(2-carbamoylphenyl)methyl]benzamide Chemical compound NC(=O)C1=CC=CC=C1CC1=CC=CC=C1C(N)=O ZRITXBQKZLRSRX-UHFFFAOYSA-N 0.000 claims 1
- SJVIFVURCJFNAV-UHFFFAOYSA-M P(=O)([O-])(O)O.[O-2].[Al+3] Chemical compound P(=O)([O-])(O)O.[O-2].[Al+3] SJVIFVURCJFNAV-UHFFFAOYSA-M 0.000 claims 1
- 150000007513 acids Chemical class 0.000 claims 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- WEVYAHXRMPXWCK-UHFFFAOYSA-N acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 8
- IKHGUXGNUITLKF-UHFFFAOYSA-N acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000000155 melt Substances 0.000 description 3
- 150000002825 nitriles Chemical class 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- PVUQZSNRHCABAS-UHFFFAOYSA-K [O-2].[Al+3].P(=O)([O-])([O-])[O-].[B+3] Chemical compound [O-2].[Al+3].P(=O)([O-])([O-])[O-].[B+3] PVUQZSNRHCABAS-UHFFFAOYSA-K 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- VMWQEZLBQQUHNB-UHFFFAOYSA-N 2-[1-(2-carbamoylphenyl)ethyl]benzamide Chemical compound C=1C=CC=C(C(N)=O)C=1C(C)C1=CC=CC=C1C(N)=O VMWQEZLBQQUHNB-UHFFFAOYSA-N 0.000 description 1
- SJSZBOAQWPKFMU-UHFFFAOYSA-N N-(1-acetamidoethyl)acetamide Chemical compound CC(=O)NC(C)NC(C)=O SJSZBOAQWPKFMU-UHFFFAOYSA-N 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N Propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- DLFVBJFMPXGRIB-UHFFFAOYSA-N acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000005712 crystallization Effects 0.000 description 1
- JAONJTDQXUSBGG-UHFFFAOYSA-N dialuminum;dizinc;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Zn+2].[Zn+2] JAONJTDQXUSBGG-UHFFFAOYSA-N 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- RCCYSVYHULFYHE-UHFFFAOYSA-N pentanediamide Chemical compound NC(=O)CCCC(N)=O RCCYSVYHULFYHE-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
Description
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PROCEDE POUR.LA PREPARATION D AMIDES METHYLENE-BIS'CARBONIQUES.
On connaît l'action en phase liquide des amides avec la formal- déhyde en présence d'agents de condensation basiques ou acides. Suivant les conditions de la réaction, il se forme soit les N-méthylol-acylamides, R.CO.
NH.CH2.OH, soit les diacylméthylendiamines R.CO.NH.CH2.NH.CO.R. Si l'on fait agir en solution aqueuse deux molécules d'un nitrile aromatique sur une molé- cule de formaldéhyde en présence d'un excès diacide minéral, on,'obtient des com- posés aromatiques méthylène-bis-amidés. Dernièrement cette réaction en solution aqueuse fut également étendue aux nitriles aliphatiques.
On a découvert quil est possible de transformer de façon parti- culièrement simple en phase gazeuse un nitrile saturé aliphatique 'ou aromati- que avec l'aldéhyde, l'acide et la vapeur d'eau, en amide méthylène-bis-carbo- nique. Si par exemple on part de l'acétonitrile et si l'on fait réagir le -corps avec la formaldéhyde, l'acide chlorhydrique et la vapeur d'eau en phase gazeu- se et en présence de catalyseurs, comme par exemple un mélange de phosphate de bore et d'oxyde d'aluminium, on obtient alors la méthylène-bis-acétamide de formule CH3.CO.NH.CH2.NH.CO.CH3.Ce composé fond à 196 .Il convient comme produit intermédiaire pour 1?obtention de matières synthétiques.
La réaction peut être conduite de façon très simple par un procé- dé à phase unique,dans lequel on fait passer un courant gazeux de vapeurs de nitrile, diacide, de formaldéhyde et d'eau à travers un tube chauffé électrique- ment et rempli du catalyseur approprié (par exemple du phosphate de bore dépo- sé sur de l'oxyde d'aluminium). Les températures utilisées dépendent du nitri- le envisagé et sont comprises entre 150 et 500 .
Pour cette réaction convien- nent les nitriles volatiles;, par exemple l'acétonitrile, le benzonitrile, le nitrile propionique etc..','On peut également soumettre des mélanges de diffé- rents nitriles saturés aliphatiques ou aromatiques à la réaction en phase ga- zeuse avec l'aldéhyde, l'acide chlorhydrique et la vapeur d'eau.
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Exemples :
1. On fait couler simultanément goutte à goutte, 82 gr. d'acéto- nitrile et 400 gr. de formaldéhyde en solution aqueuse dans un tube chauffé électriquement, avec passage d'acide chlorhydrique gazeux et d'azote exempt d'oxygène. Le remplissage du tube se composé de phosphate de bore et d'oxyde d'aluminium. La température du tube est comprise entre 150 et 250 C. Le pro- duit résultant est une substance blanche,que l'on peut faire cristalliser par exemple dans l'acétone et qui fond à 196 C, C'est la méthylène-bis-acétamide.
2. On fait couler goutte à goutte, lentement et simultanément, 164 gr. d'acétonitrile et 240 gr. d'acétaldéhyde dissoute dans la même quanti- té d'eau, à travers un tube chauffé électriquement à 200-250 G. Le tube est rempli d'un catalyseur phosphate de bore-oxyde d'aluminium. Les vapeurs s'é- chappant du tube sont condensées dans un récipient refroidi, Après traitement du condensâton obtient l'éthylidène-bis-acétamide, qui, après cristallisation, par exemple dans l'acétone, fond à 170 C.
3. On fait passer simultanément à travers un tube chauffé élec- triquement 30 gr. de benzonitrile et 100 gr. d'acétaldéhyde dissoute dans 100 gr. d'eau. La température du tube est de 200-250 C. Le tube est rempli d'un catalyseur phosphate de bore-oxyde d'aluminium ou oxyde de zinc. D'autre part, on fait passer à travers le tube, avec le mélange acétaldéhyde-benzonitrile, de l'acide chlorhydrique gazeux et de l'azote exempt d'oxygène. Les vapeurs s'échappant du tube sont condensées dans un récipient refroidi. Le produit for- mé est l'éthylidène-bis-benzoamide fondant à 197-198 C.
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PROCEDURE FOR THE PREPARATION OF METHYLENE-BIS'CARBONIC AMIDES.
The liquid phase action of amides with formaldehyde in the presence of basic or acidic condensing agents is known. Depending on the reaction conditions, either N-methylol-acylamides, R.CO.
NH.CH2.OH, or diacylmethylendiamines R.CO.NH.CH2.NH.CO.R. If two molecules of an aromatic nitrile are allowed to act in aqueous solution on one molecule of formaldehyde in the presence of an inorganic diacid excess, aromatic methylene-bis-amide compounds are obtained. Lately this reaction in aqueous solution has also been extended to aliphatic nitriles.
It has been found that it is possible to convert in a particularly simple manner in a gas phase an aliphatic or aromatic saturated nitrile with the aldehyde, the acid and the water vapor, into methylene-bis-carbonic amide. . If, for example, acetonitrile is started and the body is reacted with formaldehyde, hydrochloric acid and water vapor in the gaseous phase and in the presence of catalysts, such as for example a mixture of boron phosphate and aluminum oxide, we then obtain methylene-bis-acetamide of formula CH3.CO.NH.CH2.NH.CO.CH3. This compound melts at 196. It is suitable as an intermediate product for 1? obtaining synthetic materials.
The reaction can be carried out very simply by a single phase process, in which a gaseous stream of nitrile, diacid, formaldehyde and water vapors is passed through an electrically heated tube filled with the. suitable catalyst (eg boron phosphate deposited on aluminum oxide). The temperatures used depend on the nitrate envisaged and are between 150 and 500.
The volatile nitriles, for example acetonitrile, benzonitrile, propionic nitrile, etc., are suitable for this reaction. Mixtures of different saturated aliphatic or aromatic nitriles can also be subjected to the reaction in the ga phase. - zeuse with aldehyde, hydrochloric acid and water vapor.
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Examples:
1. One makes flow simultaneously drop by drop, 82 gr. acetonitrile and 400 gr. of formaldehyde in aqueous solution in an electrically heated tube, with passage of gaseous hydrochloric acid and oxygen-free nitrogen. The tube filling consists of boron phosphate and aluminum oxide. The temperature of the tube is between 150 and 250 C. The resulting product is a white substance, which can be crystallized for example in acetone and which melts at 196 ° C.. It is methylene-bis-. acetamide.
2. Slowly and simultaneously, 164 gr is poured in drop by drop. of acetonitrile and 240 gr. acetaldehyde dissolved in the same amount of water, through a tube electrically heated to 200-250 G. The tube is filled with a boron phosphate-aluminum oxide catalyst. The vapors escaping from the tube are condensed in a cooled vessel. After treatment of the condensate, ethylidene-bis-acetamide is obtained, which, after crystallization, for example from acetone, melts at 170 C.
3. Simultaneously pass through an electrically heated 30 g tube. of benzonitrile and 100 gr. of acetaldehyde dissolved in 100 gr. of water. The temperature of the tube is 200-250 C. The tube is filled with a boron phosphate-aluminum oxide or zinc oxide catalyst. On the other hand, is passed through the tube, with the acetaldehyde-benzonitrile mixture, gaseous hydrochloric acid and nitrogen free of oxygen. The vapors escaping from the tube are condensed in a cooled container. The product formed is ethylidene-bis-benzoamide melting at 197-198 C.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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BE511928A true BE511928A (en) |
Family
ID=150539
Family Applications (1)
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BE511928D BE511928A (en) |
Country Status (1)
Country | Link |
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BE (1) | BE511928A (en) |
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- BE BE511928D patent/BE511928A/fr unknown
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