Thionyl Chloride → N-[4-(Phenylsulfonyl)phenyl]-3,3-difluoro-2-hydroxy-2-difluoromethyl propionamide

HRID 327214노트

반응식

HRID 327214 반응식
[F:1][CH:2]([F:11])[C:3]([CH:8]([F:10])[F:9])([OH:7])[C:4](O)=[O:5].S(Cl)(Cl)=O.[C:16]1([S:22]([C:25]2[CH:31]=[CH:30][C:28]([NH2:29])=[CH:27][CH:26]=2)(=[O:24])=[O:23])[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1.C(=O)(O)[O-].[Na+]>CC(N(C)C)=O.O>[C:16]1([S:22]([C:25]2[CH:26]=[CH:27][C:28]([NH:29][C:4](=[O:5])[C:3]([OH:7])([CH:8]([F:10])[F:9])[CH:2]([F:11])[F:1])=[CH:30][CH:31]=2)(=[O:23])=[O:24])[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1

참가 물질

7

반응물 4

HCID 24386Thionyl ChlorideHCID 5166664-(Phenylsulfonyl)anilineHCID 516892Sodium BicarbonateHCID 222874542,2-Bis-difluoromethyl-2-hydroxyacetic acid

생성물 1

HCID 21480121N-[4-(Phenylsulfonyl)phenyl]-3,3-difluoro-2-hydroxy-2-difluoromethyl propionamide수율 57.2%

시약·촉매·용매 2

HCID 962Water용매HCID 31374Dimethylacetamide용매

반응 조건

온도
-10 °C

실험 절차

To a solution of 2,2-bis-difluoromethyl-2-hydroxyacetic acid (0.5 g, 2.84 mmoles) in dimethylacetamide (10 ml) at -10° C. was added thionyl chloride (0.34 g, 2.84 mmoles) dropwise. The resulting solution was stirred at -10° C. for approximately 30 mins. 4-(Phenylsulfonyl) aniline (0.58 g, 2.5 mmoles) was added and the reaction mixture was stirred overnight at room temperature. The reaction mixture was then poured into water, sodium bicarbonate solution added to give a pH of 7 and extracted with ethyl acetate. The ethyl acetate extracts were combined, washed with water, brine, dried (Na2SO4), decolorized (charcoal), and evaporated. The crude solid was dissolved in ether, clarified by filtration, and evaporated. Crystallization from methanol/water gave the title compound (0.56 g, 57%) as white, silky needles; mp 105°-108° C. 1H--NMR (300 MHz, d6 --DMSO) 6.44 (t, J=53.94Hz, 2H, HCF2), 7.58-7.68(m, 3H, ArH), 7.92-8.01 (m, 7H, ArH, OH), 10.51 (s, 1H, NH). MS(CI,CH4):392 (M+1, 100%).

후처리

  1. stirringthe reaction mixture was stirred overnight at room temperature
  2. additionadded
  3. customto give a pH of 7
  4. extractionextracted with ethyl acetate
  5. washwashed with water, brine
  6. dry with materialdried (Na2SO4)
  7. customevaporated
  8. dissolutionThe crude solid was dissolved in ether
  9. filtrationclarified by filtration
  10. customevaporated
  11. customCrystallization from methanol/water

출처 및 근거

ORD 기록
ord-c27f35bc27844142a5753d935c3e99c7
출처 데이터셋
uspto-grants-1993_12
특허 번호
US05272163

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