4-Methylmorpholine → Benzyl (2R)-2-Benzyl-3-(4-trifluoroethylpiperazin-1-ylcarbonyl)propionate

HRID 973498노트

반응식

HRID 973498 반응식
[C:1]([CH2:4][C@@H:5]([CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)[C:6]([O:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)=[O:7])([OH:3])=O.CN1CCOCC1.ClC(OCC(C)C)=O.[F:38][C:39]([F:48])([F:47])[CH2:40][N:41]1[CH2:46][CH2:45][NH:44][CH2:43][CH2:42]1>C(Cl)Cl>[CH2:16]([C@H:5]([CH2:4][C:1]([N:44]1[CH2:43][CH2:42][N:41]([CH2:40][C:39]([F:47])([F:48])[F:38])[CH2:46][CH2:45]1)=[O:3])[C:6]([O:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)=[O:7])[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1

참가 물질

6

반응물 4

HCID 79724-MethylmorpholineHCID 62365Isobutyl chloroformateHCID 95339211-(2,2,2-Trifluoroethyl)piperazineHCID 14213081(R)-2-Benzyl-succinic acid 1-benzyl ester

생성물 1

HCID 15018098Benzyl (2R)-2-Benzyl-3-(4-trifluoroethylpiperazin-1-ylcarbonyl)propionate수율 81%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

반응 조건

온도
-10 °C

실험 절차

The resultant acid from Example 23 (0.500 g, 1.68 mmol) in CH2Cl2 (7 ml) at -10° C. was treated with N-methylmorpholine (0.20 ml, 1.82 mmol) and then isobutyl chloroformate (0.22 ml, 1.68 mmol). After 5 min 1-trifluoroethylpiperazine (0.30 g, 1.78 mmol) was added and the mixture was stirred at -10° C. for 15 min and then at room temperature for 2 h. The solvent was evaporated and the residue was taken up in ethyl acetate which was washed with saturated NaHCO3 solution, water and brine, and then dried over Na2SO4 and evaporated. Chromatography of the residue on silica gel with 20-33% ethyl acetate in hexane provided 0.61 g (81%) of an oil. 1H NMR (CDCl3) δ7.10-7.40 (m,10H), 5.15 (d,1H), 5.05 (d,1H), 3.25-3.70 (m,5H), 3.04 (dd,1H), 2.97 (q,2H), 2.81 (dd,1H), 2.72 (dd,1H), 2.60 (m,4H), 2.32 (dd,1H).

후처리

  1. waitat room temperature for 2 h
  2. customThe solvent was evaporated
  3. washwas washed with saturated NaHCO3 solution, water and brine
  4. dry with materialdried over Na2SO4
  5. customevaporated

출처 및 근거

ORD 기록
ord-ff54ee1375de4638bbbcab286e398732
출처 데이터셋
uspto-grants-1991_11
특허 번호
US05063208

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