Diethyl Ether → 3-Ethyl-5-hexylsulfonamido-2-methylbenzoxazolium p-toluenesulfonate

HRID 1199329

反応式

HRID 1199329 の反応式
[CH2:1]([S:7]([NH:10][C:11]1[CH:12]=[CH:13][C:14]2[O:18][C:17]([CH3:19])=[N:16][C:15]=2[CH:20]=1)(=[O:9])=[O:8])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].[C:21]1([CH3:33])[CH:26]=[CH:25][C:24]([S:27]([O:30]CC)(=[O:29])=[O:28])=[CH:23][CH:22]=1.[CH2:34](OCC)[CH3:35]>CO>[C:21]1([CH3:33])[CH:22]=[CH:23][C:24]([S:27]([O-:30])(=[O:28])=[O:29])=[CH:25][CH:26]=1.[CH2:34]([N+:16]1[C:15]2[CH:20]=[C:11]([NH:10][S:7]([CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH3:6])(=[O:9])=[O:8])[CH:12]=[CH:13][C:14]=2[O:18][C:17]=1[CH3:19])[CH3:35]

参加物

5

反応物 3

HCID 3283Diethyl EtherHCID 6638Ethyl p-methylbenzenesulfonateHCID 150510645-Hexylsulfonamido-2-methylbenzoxazole

生成物 1

HCID 199934523-Ethyl-5-hexylsulfonamido-2-methylbenzoxazolium p-toluenesulfonate

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

反応条件

温度
150 °C

実験手順

A mixture of 60 g of intermediate A and 44 g ethyl p-toluenesulfonate was heated in a round bottom flask at 150° C. for 5 minutes. Upon cooling to room temperature, the crude brown mass was almost solidified. The product was dissolved in 25 ml methanol and poured into 300 ml diethyl ether with rapid stirring for 1 hour. The solid precipitate was chilled at 2° C. overnight, and then filtered. The tan powder was thoroughly washed with ether and recrystallized from 200 ml hot isopropyl alcohol to yield 23.4 g of 3-ethyl-5-hexylsulfonamido-2-methylbenzoxazolium p-toluenesulfonate (Intermediate B).

後処理

  1. temperatureUpon cooling to room temperature
  2. temperatureThe solid precipitate was chilled at 2° C. overnight
  3. filtrationfiltered
  4. washThe tan powder was thoroughly washed with ether
  5. customrecrystallized from 200 ml hot isopropyl alcohol

出典と根拠

ORDレコード
ord-a0e387c961e1424b9d7c666584ccb238
出典データセット
uspto-grants-1990_02
特許番号
US04900653

関連ノート

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