HuagongsheHuagongshe Chemistry Print Report · For research reference only
Methanol → 7-[2-(2,3-Dihydro-1,4-dithiin-5-yl)-2-methoxyiminoacetamido-]-3-chloro-3-cephem-4-carboxylic acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Methanol | HCID 887 | — |
| Reactant | Water | HCID 962 | — |
| Reactant | Tetrahydrofuran | HCID 8028 | — |
| Reactant | 4-Nitrobenzyl 7-[2-(2,3-dihydro-1,4-dithiin-5yl)-2-methoxyiminoacetamido]-3-chloro-3-cephem-4-carboxylate | HCID 131712021 | — |
| Catalyst | HCID 178418390 | HCID 178418390 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Product | 7-[2-(2,3-Dihydro-1,4-dithiin-5-yl)-2-methoxyiminoacetamido-]-3-chloro-3-cephem-4-carboxylic acid | HCID 131712022 | 41.9% |
Reaction Steps
4-Nitrobenzyl 7-[2-(2,3-dihydro-1,4-dithiin-5-yl)-2-methoxyiminoacetamido]-3-chloro-3-cephem-4-carboxylate (syn isomer, 5.0 g.), tetrahydrofuran (50 ml.), methanol (30 ml.), 10% palladium-carbon (2 g.), water (7 ml.) and acetic acid (0.7 ml.) were treated in a similar manner to that of Example 19-(2) to give 7-[2-(2,3-dihydro-1,4-dithiin-5-yl)-2-methoxyiminoacetamido]-3-chloro-3-cephem-4-carboxylic acid (syn isomer, 1.6 g.).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04371531 |
| Source dataset | uspto-grants-1983_02 |
| ORD ID | ord-072f0371bf6e4f37b441497d4eb65fe4 |
| Source note | uspto-grants-1983_02 |