GR14866B - METHOD OF MANUFACTURING ALKYLUMED TETRAHYDROPYRIDIONS. - Google Patents
METHOD OF MANUFACTURING ALKYLUMED TETRAHYDROPYRIDIONS.Info
- Publication number
- GR14866B GR14866B GR530114866A GR530114866A GR14866B GR 14866 B GR14866 B GR 14866B GR 530114866 A GR530114866 A GR 530114866A GR 530114866 A GR530114866 A GR 530114866A GR 14866 B GR14866 B GR 14866B
- Authority
- GR
- Greece
- Prior art keywords
- hydrogen
- general formula
- tetrahydropyridions
- alkylumed
- manufacturing
- Prior art date
Links
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
έθοδος δια την παρασκευήν αλκυλιωμένου τετραϋδροπυριδιονών του γενικού τύπου: [*] ένθα το R1 είναι υδρογόνον ή εν υπόλοιπον μεθυλίου και τα R2 και R3είναι κατώτερα υπόλοιπα αλκυλίου, διακρινομένη εκτούτου, ότι μίαν τετραϋδροπυριδιόνην του γενικού τύπου: [*] ένθα R1 είναι υδρογόνον ή υπόλοιπον μεθυλίου και τα R2 και R3 είναι υπόλοιπα κατωτέρων, κεκορεσμένων ή ακορέστων αλειφατικών υδρογονανθράκων, φέρομεν εις αντίδρασιν μετά μορμαλδεϋδης παρουσία ενός ουδετέρου άλατος του θειώδους οξέος εις συνήθη ή ελαφρώς υψωμένην θερμοκρασίν εν υδατικώ διαλύματι, και την παραγομένην 5-οξυμεθυλοένωσιν υποβάλλομεν εις μερικήν υδρογόνωσιν δια καταλυτικής οδού μέχρι της προσλήψεως της δια την υδρογονολυτικήν μετατροπήν της οξυμεθυλομάδος εις μίαν μεθυλομάδα και δια τον κορεσμόν ενδεχομένων ακορέστων 3 υποκαταστατών απαιτουμένης ποσότητος υδρογόνου. Process for the preparation of alkylated tetrahydropyridones of general formula: [*] wherein R1 is hydrogen or methyl residue and R2 and R3 are lower alkyl moieties, characterized in that a tetrahydropyridione of the general formula: [*] wherein R1 is hydrogen or methyl residue and R2 and R3 are residues of lower, saturated or unsaturated aliphatic hydrocarbons, reacted with formaldehyde in the presence of a neutral salt of sulfuric acid at a normal or slightly elevated temperature; subjected to partial hydrogenation by catalytic route until uptake for the hydrogenolytic conversion of the oxymethyl group to a methyl group and to the saturation of any unsaturated 3 substituents of the required amount of hydrogen.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GR530114866A GR14866B (en) | 1953-04-21 | 1953-04-21 | METHOD OF MANUFACTURING ALKYLUMED TETRAHYDROPYRIDIONS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GR530114866A GR14866B (en) | 1953-04-21 | 1953-04-21 | METHOD OF MANUFACTURING ALKYLUMED TETRAHYDROPYRIDIONS. |
Publications (1)
Publication Number | Publication Date |
---|---|
GR14866B true GR14866B (en) | 1953-12-05 |
Family
ID=36837094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GR530114866A GR14866B (en) | 1953-04-21 | 1953-04-21 | METHOD OF MANUFACTURING ALKYLUMED TETRAHYDROPYRIDIONS. |
Country Status (1)
Country | Link |
---|---|
GR (1) | GR14866B (en) |
-
1953
- 1953-04-21 GR GR530114866A patent/GR14866B/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1015657A (en) | Process for the production of polyether-thioethers | |
MX3465E (en) | PROCEDURE FOR OBTAINING UREAS N, N'-DIFENIL | |
BG34036A3 (en) | A method of obtaining propargyl- 2- phenylamino- imidazolines- (2) and their acid salts | |
GR14866B (en) | METHOD OF MANUFACTURING ALKYLUMED TETRAHYDROPYRIDIONS. | |
BG33435A3 (en) | Method for obtaining of 6- methyl- 8- (substituated) methylergoline | |
ES394137A1 (en) | Process for the production of alkylated n,n.-diphenyl-oxamides | |
MX3037E (en) | PROCEDURE FOR PREPARING DERIVATIVES OF DI OXO LANO | |
GR14863B (en) | METHOD OF MANUFACTURING ALKYLED PEPPER. | |
ES378206A1 (en) | 2-(imidazolid inylidence-(2)-amino)-5-nitro-thiazoles and salts thereof | |
ES331797A1 (en) | Procedure for the preparation of alynatic aminonitrils. (Machine-translation by Google Translate, not legally binding) | |
ES379673A1 (en) | A process for the manufacture of basic oxazine dyestuffs | |
FR1080132A (en) | Advanced process for preparing glutamic acid | |
GB1094810A (en) | Unsaturated 4,5-seco-steroid compounds, and processes for their preparation | |
DK105207C (en) | Process for the preparation of d-glucone or d-glucoheptonic acid addition salts of erythromycin. | |
GB1097057A (en) | Imidazolinonesulphonamide derivatives | |
GB1042205A (en) | Manufacture of benzo[a]quinolizines | |
ES457558A1 (en) | Process for the preparation of aminonitrophenols | |
GB1118755A (en) | Difluoraminated urea derivatives | |
GR18757B (en) | METHOD FOR MANUFACTURING NEW PRODUCTS 5 - 6 - DIHYDRO - BENZO (C) KINNOLIS. | |
GB1060354A (en) | Process for preparing 3-keto-í¸-steroids | |
ES320857A1 (en) | A procedure for the production of fenantren derivatives. (Machine-translation by Google Translate, not legally binding) | |
GR23093B (en) | NITRATION METHOD OF CYCLOXYLIC COMPOUNDS. | |
FR1082404A (en) | Process for preparing phosphoric acid | |
ES216865A1 (en) | A procedure for the obtaining of derivatives of the trºpico acid (Machine-translation by Google Translate, not legally binding) | |
FR1087354A (en) | Process for preparing the salts of vinyl benzene parasulfonic acid |