Diisopropylethylamine → 4-Nitrophenyl 1,1,1-trifluoro-2-methylpropan-2-ylcarbamate

HRID 1629981

반응식

HRID 1629981 반응식
[F:1][C:2]([F:8])([F:7])[C:3]([NH2:6])([CH3:5])[CH3:4].Cl[C:10]([O:12][C:13]1[CH:18]=[CH:17][C:16]([N+:19]([O-:21])=[O:20])=[CH:15][CH:14]=1)=[O:11].C(N(C(C)C)CC)(C)C.C(=O)([O-])O.[Na+]>ClCCl>[F:1][C:2]([F:8])([F:7])[C:3]([NH:6][C:10](=[O:11])[O:12][C:13]1[CH:14]=[CH:15][C:16]([N+:19]([O-:21])=[O:20])=[CH:17][CH:18]=1)([CH3:5])[CH3:4]

참가 물질

6

반응물 4

HCID 81531DiisopropylethylamineHCID 821294-Nitrophenyl chloroformateHCID 516892Sodium BicarbonateHCID 112751881,1,1-Trifluoro-2-methylpropan-2-amine

생성물 1

HCID 665841014-Nitrophenyl 1,1,1-trifluoro-2-methylpropan-2-ylcarbamate수율 26.1%

시약·촉매·용매 1

HCID 6344Dichloromethane용매3회

반응 조건

온도
-15 °C

실험 절차

To a solution of 0.35 g (2.75 mmol) of 1,1,1-trifluoro-2-methylpropan-2-ylamine (CAS 812-18-0) in 20 ml of dichloromethane, cooled to −15° C., is added dropwise 1.00 g (4.96 mmol) of 4-nitrophenyl chloroformate (CAS 7693-46-1) dissolved in 15 ml of dichloromethane, while maintaining the temperature at −15° C. 0.48 ml (2.75 mmol) of diisopropylethylamine in 10 ml of dichloromethane is then added, still at −15° C. Stirring is continued at −15° C. for 2 hours, and the temperature of the mixture is then allowed to return to 0° C. over 1 hour. 20 ml of saturated aqueous sodium hydrogen carbonate solution are then added. The organic phase is separated out by settling and dried over sodium sulfate, and the solvent is partially evaporated off under reduced pressure to a volume of about 8 ml. This solution is chromatographed on a column of 40 g of silica gel, eluting with a mixture of 20% cyclohexane in dichloromethane, to give 0.21 g of 4-nitrophenyl 1,1,1-trifluoro-2-methylpropan-2-ylcarbamate in the form of a white solid.

후처리

  1. waitto return to 0° C. over 1 hour
  2. customThe organic phase is separated out
  3. dry with materialdried over sodium sulfate
  4. customthe solvent is partially evaporated off under reduced pressure to a volume of about 8 ml
  5. customThis solution is chromatographed on a column of 40 g of silica gel
  6. washeluting with a mixture of 20% cyclohexane in dichloromethane

출처 및 근거

ORD 기록
ord-72ceb5bc7a2249f686eb0c909eb45dc8
출처 데이터셋
uspto-grants-2014_07
특허 번호
US08791119B2

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