CH299943A - Process for the preparation of a pyrimidine derivative. - Google Patents
Process for the preparation of a pyrimidine derivative.Info
- Publication number
- CH299943A CH299943A CH299943DA CH299943A CH 299943 A CH299943 A CH 299943A CH 299943D A CH299943D A CH 299943DA CH 299943 A CH299943 A CH 299943A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- solution
- para
- ether
- chlorophenyl
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 238000002360 preparation method Methods 0.000 title claims description 4
- 150000003230 pyrimidines Chemical class 0.000 title description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims description 6
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims description 3
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000001953 recrystallisation Methods 0.000 claims description 2
- YEXIBPDKYUNGGR-UHFFFAOYSA-N 5-(4-chlorophenyl)-6-propylpyrimidine-2,4-diamine Chemical compound CCCC1=NC(N)=NC(N)=C1C1=CC=C(Cl)C=C1 YEXIBPDKYUNGGR-UHFFFAOYSA-N 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 16
- 239000000243 solution Substances 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- YXHKONLOYHBTNS-UHFFFAOYSA-N Diazomethane Chemical compound C=[N+]=[N-] YXHKONLOYHBTNS-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- -1 α-para-chlorophenyl-α-butyryl-acetonitrile Chemical compound 0.000 description 2
- HNAGHMKIPMKKBB-UHFFFAOYSA-N 1-benzylpyrrolidine-3-carboxamide Chemical compound C1C(C(=O)N)CCN1CC1=CC=CC=C1 HNAGHMKIPMKKBB-UHFFFAOYSA-N 0.000 description 1
- JLQRIXWUYHCQNC-UHFFFAOYSA-N 2-chloro-3-phenylprop-2-enenitrile Chemical compound N#CC(Cl)=CC1=CC=CC=C1 JLQRIXWUYHCQNC-UHFFFAOYSA-N 0.000 description 1
- IVYMIRMKXZAHRV-UHFFFAOYSA-N 4-chlorophenylacetonitrile Chemical compound ClC1=CC=C(CC#N)C=C1 IVYMIRMKXZAHRV-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZRKWMRDKSOPRRS-UHFFFAOYSA-N N-Methyl-N-nitrosourea Chemical compound O=NN(C)C(N)=O ZRKWMRDKSOPRRS-UHFFFAOYSA-N 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 239000002168 alkylating agent Substances 0.000 description 1
- 229940100198 alkylating agent Drugs 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- OBNCKNCVKJNDBV-UHFFFAOYSA-N butanoic acid ethyl ester Natural products CCCC(=O)OCC OBNCKNCVKJNDBV-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 201000004792 malaria Diseases 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Procédé de préparation d'un dérivé de la pyrimidine. La présente invention se rapporte à un procédé de préparation d'un composé nou veau, la 2,4-diamino-5-para-ehlorophényl-6-n- propyl-pyrimidine.
Il a été trouvé que ce composé possède des qualités précieuses pour le traitement de la malaria humaine. On le prépare, selon la pré sente invention, en faisant réagir un fi-alcoy'_- oxy-fl-n - propyl- a -par a-chlorophényl-acrylo- nitrile avec de la guanidine. Ce composé cristallise à partir d'alcool et a un point de fusion de 171-174 C.
L'acrylonitrile susmentionné peut être préparé en partant d'a-para-chlorophényl-a- butyryl-acétonitrile en faisant réagir ce der nier avec un agent d'alcoylation, par exem ple le diazométhane. Comme le groupe alcoyle (R) contenu dans le gmoupe alcoyloxy n'entre pas dans le produit final, tout groupe alcoyle inférieur convenable peut être employé. Les réactions s'effectuent comme indiqué ci-après:
EMI0001.0022
Exemple: On a préparé de l'a-butyryl-a-para-chloro- phényl-acétonitrile de la manière suivante On a ajouté du p-chlorophényl-acétonitrile (36,5 g) et du butyrate d'éthyle (29 g) à une solution d'éthoxyde de sodium (préparé avec 5,75 g de sodium) dans de l'éthanol ab solu (150 ml). La solution a été chauffée au bain de vapeur pendant 6 heures. Après re froidissement, le tout a été versé dans de l'eau, et l'huile a été bien extraite avec de l'éther; la solution dans l'éther a été mise de côté, et la solution aqueuse a été neutralisée avec de l'acide sulfurique 1 N.
Il s'est séparé une huile lourde que l'on a reprise avec de l'éther, lavée avec de l'eau, une solution de bicarbonate et de nouveau avec de l'eau. Après séchage, l'éther a été éliminé et l'on a obtenu une huile épaisse qui s'est solidifiée au repos (33 g). On a recristallisé dans un mélange d'éther et d'éther de pétrole. Le céto- nitrile ci-dessus (16 g) a été méthylé avec du diazométhane dans de l'éther. La solution de diazométhane avait été préparée en par tant de N-nitrosométhylurée (20 g).
L'éther et l'excès de diazométhane ont été évaporés au bain de vapeur, et l'huile a été dissoute dans de l'éthanol (100 ml).
A cette solution, on a. ajouté une solution de guanidine dans de l'éthanol (100 ml) qui avait été préparée avec 9,5 g de son chlor- hydrate. La solution a été chauffée avec re flux pendant 5 heures, l'alcool a été éliminé, et le résidu, traité avec de la soude caustique 5 N. La substance insoluble a été alors filtrée. Après purification par précipitation, avec de la soude caustique, d'une solution dans de l'acide acétique dilué, et par recristallisation dans de l'alcool, le produit avait un point de fusion de 171- 174 C. Le rendement était. de 56 %.
Process for the preparation of a pyrimidine derivative. The present invention relates to a process for the preparation of a novel compound, 2,4-diamino-5-para-ehlorophenyl-6-n-propyl-pyrimidine.
This compound has been found to have valuable qualities for the treatment of human malaria. It is prepared according to the present invention by reacting α-alkyl-oxy-fl-n-propyl-α -par α-chlorophenyl-acrylonitrile with guanidine. This compound crystallizes from alcohol and has a melting point of 171-174 C.
The aforementioned acrylonitrile can be prepared starting from α-para-chlorophenyl-α-butyryl-acetonitrile by reacting it with an alkylating agent, for example diazomethane. Since the alkyl group (R) contained in the alkyloxy group does not enter into the final product, any suitable lower alkyl group can be employed. The reactions are carried out as indicated below:
EMI0001.0022
Example: α-Butyryl-α-para-chlorophenyl-acetonitrile was prepared as follows. P-Chlorophenyl-acetonitrile (36.5 g) and ethyl butyrate (29 g) were added to a solution of sodium ethoxide (prepared with 5.75 g of sodium) in absolute ethanol (150 ml). The solution was heated in the steam bath for 6 hours. After cooling, the whole was poured into water, and the oil was well extracted with ether; the ether solution was set aside, and the aqueous solution was neutralized with 1 N sulfuric acid.
A heavy oil separated which was taken up with ether, washed with water, bicarbonate solution and again with water. After drying, the ether was removed and a thick oil was obtained which solidified on standing (33 g). Recrystallized from a mixture of ether and petroleum ether. The above ketonitrile (16g) was methylated with diazomethane in ether. The diazomethane solution had been prepared as N-nitrosomethylurea (20 g).
The ether and excess diazomethane were evaporated on a steam bath, and the oil was dissolved in ethanol (100 ml).
To this solution, we have. added a solution of guanidine in ethanol (100 ml) which had been prepared with 9.5 g of its hydrochloride. The solution was heated with reflux for 5 hours, the alcohol was removed, and the residue, treated with 5 N caustic soda. The insoluble substance was then filtered. After purification by precipitation, with caustic soda, from a solution in dilute acetic acid, and by recrystallization from alcohol, the product had a melting point of 171-174 C. The yield was. by 56%.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US299943XA | 1950-06-14 | 1950-06-14 | |
| CH297992T | 1951-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH299943A true CH299943A (en) | 1954-06-30 |
Family
ID=25733916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH299943D CH299943A (en) | 1950-06-14 | 1951-06-13 | Process for the preparation of a pyrimidine derivative. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH299943A (en) |
-
1951
- 1951-06-13 CH CH299943D patent/CH299943A/en unknown
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