Ammonia → Benzenesulfonamide, 2,5-dimethoxy-

HRID 1252337

반응식

HRID 1252337 반응식
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]([O:9][CH3:10])=[CH:5][C:4]=1[S:11](Cl)(=[O:13])=[O:12].[NH3:15]>O1CCCC1>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]([O:9][CH3:10])=[CH:5][C:4]=1[S:11]([NH2:15])(=[O:13])=[O:12]

참가 물질

4

반응물 2

HCID 222AmmoniaHCID 1370252,5-Dimethoxybenzenesulfonyl chloride

생성물 1

HCID 209044Benzenesulfonamide, 2,5-dimethoxy-

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a stirred solution of 15.0 g (0.063 mole) of 2,5-dimethoxybenzenesulfonyl chloride in 150 mL of tetrahydrofuran was added dropwise 80 mL of ammonia (28% aqueous solution). After complete addition the mixture was allowed to stir for 1.75 hours at room temperature. Upon standing the mixture separated into two phases. The organic phase was removed from the aqueous phase and was evaporated under reduced pressure to leave a solid residue. This residue was recrystallized from hot water (125 mL) and ethanol (40 mL) to yield 13.1 g of 2,5-dimethoxyphenylsulfonamide (mp 146.5-148.5).

후처리

  1. additionAfter complete addition the mixture
  2. customseparated into two phases
  3. customThe organic phase was removed from the aqueous phase
  4. customwas evaporated under reduced pressure
  5. customto leave a solid residue
  6. customThis residue was recrystallized from hot water (125 mL) and ethanol (40 mL)

출처 및 근거

ORD 기록
ord-9237d0d8d56e4e399868325df64a78a4
출처 데이터셋
uspto-grants-1988_05
특허 번호
US04743291

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