FIELD: organic chemistry. SUBSTANCE: 1,1-dioxide-6,6-dibromopenicillanic acid or 1,1-dioxide-6-α-bromopenicillanic acid is interacted with reducing agent - sodium sulfite. Process is carried out in an aqueous medium in the presence of sodium tetraborate or sodium dihydrophosphate at pH = 7.8-8.6. Then the end product is isolated as free acid or its salt. EFFECT: improved method of synthesis.
| Title |
Year |
Author |
Number |
| METHOD OF SYNTHESIS OF 6,6-DIBROMOPENICILLANIC ACID |
1993 |
- Filatova Aida Aleksandrovna
- Zinchenko Evgenij Jakovlevich
- Povaljaeva Elena Anatol'Evna
|
RU2064932C1 |
| METHOD OF PRODUCING 1,1-DIOXIDE OF PENICILLANIC ACID OR ETHER THEREOF |
0 |
- Bernard Shilds Mur
- Ronni D.Kerroll
- Robert Alfred Volkmann
|
SU1192626A3 |
| METHOD OF PRODUCING BETA-LACTAM COMPOUNDS OR THEIR ACID-ADDITIVE SALTS, OR THEIR SALTS WITH ALKALI METALS |
0 |
- Vagn Ole Godtfredsen
- Velf Fon Daene
|
SU976852A3 |
| PROCESS FOR PRODUCING ESTERS OF 1,1-DIOXIDE OF PENICILLANIC ACID |
0 |
|
SU944505A3 |
| 2-BROMO- AND 2-NITROXY-DERIVATIVES OF 3,3-DIBROMO-4-OXO- -AZETHIDINES, METHOD OF THEIR SYNTHESIS, METHOD OF TUMOR CELL SUPPRESSION, 2-CHLORO-DERIVATIVES OF 3,3-DIBROMO-4-OXO-AZETHIDINES |
1994 |
|
RU2134685C1 |
| METHOD OF PRODUCING 1,1-DIOXO-6(SUBSTITUTED METHYLENE)-PENICILLANIC ACIDS OR THEIR COMPLEX ALLYL ESTERS, OR THEIR SALTS WITH ALKALI METALS |
0 |
|
SU1508961A3 |
| METHOD OF PREPARING 1,1-DIOXIDES OF PENICILLANIC ACID OR ITS ESTERS OR ITS SALTS |
0 |
|
SU860706A1 |
| METHOD OF PRODUCING 5(R)PENEME DERIVATIVES |
0 |
- Marko Alpedzhiani
- Anzhelo Bedeski
- Mauritsio Foglio
- Dzhovanni Francheski
- Ettore Perrone
|
SU1375139A3 |
| METHOD OF SYNTHESIS OF UREIDO-DERIVATIVES OF PENICILLIN OR CEPHALOSPORIN |
1990 |
- Zinchenko E.Ja.
- Lesovaja Z.I.
- Mezentsev A.S.
|
SU1707959A1 |
| METHOD OF OBTAINING PENICILLANIC ACID DERIVATIVES OR THEIR ADDITIVE SALTS WITH ACIDS |
0 |
|
SU1122230A3 |
