Boron tribromide → HCID 86583544、化合物

HRID 1841738ノート

反応式

HRID 1841738 の反応式
B(Br)(Br)Br.[C:5]([C:7]1[CH:12]=[CH:11][C:10]([NH:13][CH:14]([C:20]2[CH:25]=[CH:24][C:23]([O:26]C)=[C:22]([S:28][CH3:29])[CH:21]=2)[C:15]([O:17][CH2:18][CH3:19])=[O:16])=[CH:9][CH:8]=1)#[N:6]>C(Cl)Cl>[C:5]([C:7]1[CH:12]=[CH:11][C:10]([NH:13][CH:14]([C:20]2[CH:25]=[CH:24][C:23]([OH:26])=[C:22]([S:28][CH3:29])[CH:21]=2)[C:15]([O:17][CH2:18][CH3:19])=[O:16])=[CH:9][CH:8]=1)#[N:6]

参加物

4

反応物 2

HCID 25134Boron tribromideHCID 86583545HCID 86583545、化合物

生成物 1

HCID 86583544HCID 86583544、化合物

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

反応条件

温度
0 °C

実験手順

A 1M solution of BBr3 in CH2Cl2 (4.5 ml, 4.5 mmol) was added at −78° C. to a solution of the ethyl (RS)-(4-cyano-phenylamino)-(4-methoxy-3-methylsulphanyl-phenyl)-acetate (320 mg, 0.899 mmol) obtained in Example 167.2 in CH2Cl2 (10 ml). The mixture was stirred at −78° C. for 5 min., at 0° C. for 30 min. and at room temperature for 2 h. Ice-water was added and the mixture was stirred for 10 min. The mixture was extracted with CH2Cl2. The organic phase was dried, filtered and concentrated. The residue was purified by chromatography (SiO2, hexane/EtOAc 2:1). Ethyl (RS)-(4-cyano-phenylamino)-(4-hydroxy-3-methylsulphanyl-phenyl)-acetate was obtained as a colorless oil (198 mg, 64%); MS: 343 ([M+H]+).

後処理

  1. stirringthe mixture was stirred for 10 min
  2. extractionThe mixture was extracted with CH2Cl2
  3. customThe organic phase was dried
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by chromatography (SiO2, hexane/EtOAc 2:1)

出典と根拠

ORDレコード
ord-465ca6d049104f90bf1d677179f7c981
出典データセット
uspto-grants-2004_01
特許番号
US06683215B2

反応ノート

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