化工社化工社 化学情報印刷レポート · 研究参考用
Dimethylformamide → (6R)-8-Oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Dimethylformamide | HCID 6228 | — |
| 反応物 | Phosphorus oxychloride | HCID 24813 | — |
| 反応物 | Acetamide, 2-(trimethylsilyl)- | HCID 357676 | — |
| 反応物 | (6R)-7-amino-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid | HCID 12941984 | — |
| 溶媒 | Ethyl Acetate | HCID 8857 | — |
| 生成物 | (6R)-8-Oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid | HCID 52921562 | 248.6% |
反応手順
A solution of 7-amino-3-cephem-4-carboxylic acid (1.0 g.) and trimethylsilylacetamide (3.8 g.) in ethyl acetate (10 ml.) and a solution of 2-[2-(2,2,2-trifluoroacetamidothiazol-4-yl)]-2-(2,4-dichlorobenzyloxyimino)acetic acid (syn isomer, 2.0 g.), phosphoryl chloride (0.9 g.) and N,N-dimethylformamide (0.43 g.) in ethyl acetate (16 ml.) were treated in a similar manner to that of Example 1-(1) to give 7-[2-(2,2,2-trifluoroacetamido)thiazol-4-yl]-2-(2,4-dichlorobenzyloxyimino)acetamido]-3-cephem-4-carboxylic acid (syn isomer, 2.3 g.).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04284631 |
| 出典データセット | uspto-grants-1981_08 |
| ORD ID | ord-3447e3b6ddc84dd69fdda01660caedcd |
| 出典メモ | uspto-grants-1981_08 |