HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Anhydride → 7-(2-Methoxyimino-3,3-diethoxy-4-bromobutyramido)-3-cephem-4-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Anhydride | HCID 7918 | — |
| Reactant | Sodium Acetate | HCID 517045 | — |
| Reactant | 7-(2-Methoxyimino-3,3-diethoxy-4-bromobutyramido)-3-hydroxycepham-4-carboxylic acid | HCID 86738093 | — |
| Solvent | Methyl Isobutyl Ketone | HCID 7909 | — |
| Product | 7-(2-Methoxyimino-3,3-diethoxy-4-bromobutyramido)-3-cephem-4-carboxylic acid | HCID 131712534 | 69.7% |
Reaction Steps
7-(2-Methoxyimino-3,3-diethoxy-4-bromobutyramido)-3-hydroxycepham-4-carboxylic acid (syn isomer, 5 g), acetic anhydride (4.55 ml), sodium acetate (1.45 g), and methyl isobutyl ketone (50 ml) were treated in a similar manner to that of Example 43 to give 7-(2-methoxyimino-3,3-diethoxy-4-bromobutyramido)-3-cephem-4-carboxylic acid (syn isomer, 3.36 g).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04298529 |
| Source dataset | uspto-grants-1981_11 |
| ORD ID | ord-3a3f505aa80a4cff8ad86ea01ef3bbc1 |
| Source note | uspto-grants-1981_11 |