Nitric Acid → 2,3,4-Trifluoro-5-nitrobenzoic acid

HRID 31960

반응식

HRID 31960 반응식
OS(O)(=O)=O.[N+:6]([O-:9])(O)=[O:7].[F:10][C:11]1[C:19]([F:20])=[C:18]([F:21])[CH:17]=[CH:16][C:12]=1[C:13]([OH:15])=[O:14]>>[F:10][C:11]1[C:19]([F:20])=[C:18]([F:21])[C:17]([N+:6]([O-:9])=[O:7])=[CH:16][C:12]=1[C:13]([OH:15])=[O:14]

참가 물질

4

반응물 3

HCID 944Nitric AcidHCID 1118Sulfuric AcidHCID 3029322,3,4-Trifluorobenzoic acid

생성물 1

HCID 158712412,3,4-Trifluoro-5-nitrobenzoic acid수율 92%

실험 절차

A 3 liter three neck round bottom flask is charged with 125 mL H2SO4. Fuming nitric acid is added (8.4 mL, 199 mmol) and the mixture gently stirred. 2,3,4-Trifluorobenzoic acid 1 (25 g, 142 mmol) is added in 5 g portions over 90 minutes. The dark brownish yellow solution is stirred for 60 minutes at which time the reaction is complete. The reaction mixture is poured into 1 liter of an ice water mixture and extracted with diethyl ether (3×600 mL). The combined organic extracts are dried (MgSO4) and concentrated under reduced pressure to give a yellow solid. The solid is suspended in hexanes and stirred for 30 minutes after which time it is filtered to give 29 g (92%) of clean desired product as an off-yellow solid: MS APCI (−) m/z 220 (M−1) detected.

후처리

  1. stirringThe dark brownish yellow solution is stirred for 60 minutes at which time the reaction
  2. extractionextracted with diethyl ether (3×600 mL)
  3. dry with materialThe combined organic extracts are dried (MgSO4)
  4. concentrationconcentrated under reduced pressure
  5. customto give a yellow solid
  6. stirringstirred for 30 minutes after which time it
  7. filtrationis filtered

출처 및 근거

ORD 기록
ord-bf1687a6a07d4decba7a8d2bf1328937
출처 데이터셋
uspto-grants-2008_09
특허 번호
US07425637B2

연결된 노트

불러오는 중…