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Carbon tetrabromide → tert-Butyl 2-(2,2-dibromoethenyl)pyrrolidine-1-carboxylate
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Carbon tetrabromide | HCID 11205 | — |
| 反応物 | Triphenylphosphine | HCID 11776 | — |
| 反応物 | tert-butyl (2S)-2-formylpyrrolidine-1-carboxylate | HCID 2734674 | — |
| 溶媒 | Dichloromethane | HCID 6344 | — |
| 生成物 | tert-Butyl 2-(2,2-dibromoethenyl)pyrrolidine-1-carboxylate | HCID 14730280 | 47.9% |
反応手順
Following the procedure of Example 3, 6.8 g of (S)-2-formyl-1-pyrrolidinecarboxylic acid, 1,1-dimethylethyl ester in 20 ml of methylene chloride is reacted with 40 g of triphenylphosphine, 26 g of carbon tetrabromide in 700 ml of methylene chloride to give 5.8 g of the desired product as a colorless solid, mp 58°-59° C., [α]D26° =+24°±1 (C=1.048%, methylene chloride).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US05128483 |
| 出典データセット | uspto-grants-1992_07 |
| ORD ID | ord-87285bdd070d4b0ca5caf749ab7a2944 |
| 出典メモ | uspto-grants-1992_07 |