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4-Chloroaniline → 5-Chloro-3-(ethylsulfanyl)-3-(2-hydroxyethyl)-1,3-dihydro-2H-indol-2-one
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 4-Chloroaniline | HCID 7812 | — |
| 反応物 | Triethylamine | HCID 8471 | — |
| 反応物 | Tert-Butyl hypochlorite | HCID 521297 | — |
| 反応物 | 2-Ethylmercaptobutyrolactone | HCID 10877259 | — |
| 溶媒 | Water | HCID 962 | — |
| 溶媒 | Dichloromethane | HCID 6344 | — |
| 生成物 | 5-Chloro-3-(ethylsulfanyl)-3-(2-hydroxyethyl)-1,3-dihydro-2H-indol-2-one | HCID 12866418 | — |
反応手順
To the stirred solution of 5.6 g p-chloroaniline in 150 ml of methylene chloride is added dropwise 4.7 ml of t-butyl hypochlorite in 20 ml of methylene chloride at -65°. After ten minutes, the solution of 5.75 g of 2-ethylmercaptobutyrolactone in 20 ml of methylene chloride is added dropwise and the temperature held at -65° for 2 hours. Then the solution of 6.1 ml of triethylamine in 20 ml of methylene chloride is added dropwise and the mixture is allowed to warm up to room temperature. 50 ml of water are added with stirring and the precipitate filtered off, to yield the 5-chloro-3-(2-hydroxyethyl)-3-ethylmercapto-2-oxindole melting at 132°-135°.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04073911 |
| 出典データセット | uspto-grants-1978_02 |
| ORD ID | ord-b459c9bc0af5466f894841e23c5e3d02 |
| 出典メモ | uspto-grants-1978_02 |