Lithium borohydride → 2-chloro-5-(hydroxymethyl)Benzenesulfonamide

HRID 1810141ノート

反応式

HRID 1810141 の反応式
C([O:3][C:4](=O)[C:5]1[CH:10]=[CH:9][C:8]([Cl:11])=[C:7]([S:12](=[O:15])(=[O:14])[NH2:13])[CH:6]=1)C.[BH4-].[Li+]>O1CCCC1.O>[Cl:11][C:8]1[CH:9]=[CH:10][C:5]([CH2:4][OH:3])=[CH:6][C:7]=1[S:12]([NH2:13])(=[O:15])=[O:14]

参加物

5

反応物 2

HCID 4148881Lithium borohydrideHCID 15938945Benzoic acid, 3-(aminosulfonyl)-4-chloro-, ethyl ester

生成物 1

HCID 183743812-chloro-5-(hydroxymethyl)Benzenesulfonamide収率 88.9%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒2 回

反応条件

温度
4 °C

実験手順

To a solution of 4-chloro-3-sulfamoyl-benzoic acid ethyl ester (46.95 g, 166 mmol) in 500 mL of dry tetrahydrofuran is added dropwise, with stirring, 199 mL of a 2 M solution of lithium borohydride in tetrahydrofuran. The mixture is stirred and refluxed for 5 hr, then left at room temperature for 18 h, and is then carefully diluted with 400 mL of water. The mixture is cooled to 4° C. for 24 hours and filtered to yield 32.7 g (82%) of the title compound as an off-white solid.

後処理

  1. stirringThe mixture is stirred
  2. temperaturerefluxed for 5 hr
  3. filtrationfiltered

出典と根拠

ORDレコード
ord-dff4cfd8504643c99a790be4f741a556
出典データセット
uspto-grants-2013_01
特許番号
US08362063B2

反応ノート

読み込み中…