HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 7-[2-(2-Aminothiazol-4-yl)-2-(2-chloroethoxyimino)-acetamido]-3-cephem-4-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Methanol | HCID 887 | — |
| Reactant | 7-[2-(2-Formamidothiazol-4-yl)-2-(2-chloroethoxyimino)acetamido]-3-cephem-4-carboxylic acid | HCID 131712482 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | 7-[2-(2-Aminothiazol-4-yl)-2-(2-chloroethoxyimino)-acetamido]-3-cephem-4-carboxylic acid | HCID 131712483 | 82.8% |
Reaction Steps
7-[2-(2-Formamidothiazol-4-yl)-2-(2-chloroethoxyimino)acetamido]-3-cephem-4-carboxylic acid (syn isomer, 1.8 g.), conc. hydrochloric acid (1.6 g.), methanol (27 ml.) and tetrahydrofuran (40 ml.) were treated in a similar manner to that of Example 15-(3) to give 7-[2-(2-aminothiazol-4-yl)-2-(2-chloroethoxyimino)-acetamido]-3-cephem-4-carboxylic acid (syn isomer, 1.4 g.).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04400379 |
| Source dataset | uspto-grants-1983_08 |
| ORD ID | ord-b77ec4a4551e4d52be3c3a10992c322d |
| Source note | uspto-grants-1983_08 |