Water → 3-Dibenzylamino-2,6-difluoro-benzoic acid benzyl ester

HRID 1843630

반응식

HRID 1843630 반응식
[CH2:1]([N:8]([CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)[C:9]1[CH:14]=[CH:13][C:12]([F:15])=[CH:11][C:10]=1[F:16])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C([Li])CCC.Cl[C:30]([O:32][CH2:33][C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1)=[O:31].O>C1COCC1>[CH2:33]([O:32][C:30](=[O:31])[C:11]1[C:12]([F:15])=[CH:13][CH:14]=[C:9]([N:8]([CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[C:10]=1[F:16])[C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1

참가 물질

6

반응물 4

HCID 962WaterHCID 10387Benzyl chloroformateHCID 58086650Dibenzyl-(2,4-difluoro-phenyl)-amineHCID 178418339Butyllithium

생성물 1

HCID 584771183-Dibenzylamino-2,6-difluoro-benzoic acid benzyl ester

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

반응 조건

온도
-78 °C

실험 절차

To a solution of dibenzyl-(2,4-difluoro-phenyl)-amine (17.5 g, 0.056 mol) in THF (140 mL), under nitrogen atmosphere, cooled at −78° C., n-butyllithium (1.6 M in hexane, 38 mL, 0.06 mol) was slowly added. The reaction was stirred for 1 hour, and then quickly added via a cannula to a solution of benzyl chloroformate (11.78 mL, 0.084 mol) in THF (140 mL) previously cooled at −78° C. The reaction was then allowed to warm to room temperature, poured into water and extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 5% ethyl acetate in hexane grading to 10% acetate (quant.).

후처리

  1. temperatureto warm to room temperature
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationThe filtrate was concentrated
  7. custompurified by silica gel column chromatography
  8. washeluting with 5% ethyl acetate in hexane grading to 10% acetate (quant.)

출처 및 근거

ORD 기록
ord-daf81abe12e84d59b9fffa28da969bab
출처 데이터셋
uspto-grants-2015_02
특허 번호
US08946250B2

연결된 노트

불러오는 중…