HuagongsheHuagongshe Chemistry Print Report · For research reference only
Phosphorus oxychloride → 7-[2-(2-formamidothiazol-4-yl)-2-(2,2,2-trifluoroethoxyimino)acetamido]-3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Phosphorus oxychloride | HCID 24813 | — |
| Reactant | Acetamide, 2-(trimethylsilyl)- | HCID 357676 | — |
| Reactant | 7-Amino-3-(1-methyltetrazol-5-ylthiomethyl)-3-cephem-4-carboxylicacid | HCID 13020813 | — |
| Reactant | 2-(2,2,2-Trifluoroethoxyimino)-2-(2-formylaminothiazol-4-yl)acetic acid | HCID 54018458 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | 7-[2-(2-formamidothiazol-4-yl)-2-(2,2,2-trifluoroethoxyimino)acetamido]-3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid | HCID 131715309 | 28.9% |
Reaction Steps
A solution of 2-(2-formamidothiazol-4-yl)-2-(2,2,2-trifluoroethoxyimino)acetic acid (syn isomer, 1.78 g.), N,N-dimethylformamide (0.48 g.) and phosphoryl chloride (1.01 g.) in ethyl acetate (18 ml.), and a solution of 7-amino-3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid (1.97 g.) and trimethylsilylacetamide (4.72 g.) in ethyl acetate (28 ml.). were treated in a similar manner to that of Example 17 (1) to give 7-[2-(2-formamidothiazol-4-yl)-2-(2,2,2-trifluoroethoxyimino)acetamido]-3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid (syn isomer, 1.05 g.).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04698337 |
| Source dataset | uspto-grants-1987_10 |
| ORD ID | ord-16cafcde54e3426d9305a42e7a95e6cb |
| Source note | uspto-grants-1987_10 |