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2,5-Dimethoxytetrahydrofuran → 2-Chloro-4-(1-pyrrolyl)benzoic acid methyl ester
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 2,5-Dimethoxytetrahydrofuran | HCID 79098 | — |
| 反応物 | Methyl 4-Amino-2-chlorobenzoate | HCID 11839197 | — |
| 溶媒 | Acetic Acid | HCID 176 | — |
| 溶媒 | Water | HCID 962 | — |
| 生成物 | 2-Chloro-4-(1-pyrrolyl)benzoic acid methyl ester | HCID 4763735 | — |
反応手順
A mixture of 4-amino-2-chlorobenzoic acid methyl ester (0.46 g) and 2,5-dimethoxytetrahydrofuran (0.33 mL) in AcOH (16 mL) was heated under reflux for 2 h. The mixture was cooled to room temperature, diluted with water and extracted with EtOAc. The extract was washed with satd. NaHCO3 and brine, dried (MgSO4), filtered and evaporated. The residue was purified by column chromatography (silica gel; eluent: hexane/EtOAc 5/1) to yield 0.48 g of 2-chloro-4-(1-pyrrolyl)benzoic acid methyl ester. ESMS: m/z 236 (MH+).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US06855843B2 |
| 出典データセット | uspto-grants-2005_02 |
| ORD ID | ord-7d9c216325c049cd98f689b70dd37e81 |
| 出典メモ | uspto-grants-2005_02 |