1,2-Dichloroethane → 4-(3,3-Diphenylpropanoyl)piperazin-2-one

HRID 469261

반응식

HRID 469261 반응식
[NH:1]1[CH2:6][CH2:5][NH:4][CH2:3][C:2]1=[O:7].[C:8]1([CH:14]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[CH2:15][C:16](O)=[O:17])[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1.C(Cl)CCl>ClCCl>[C:19]1([CH:14]([C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH2:15][C:16]([N:4]2[CH2:5][CH2:6][NH:1][C:2](=[O:7])[CH2:3]2)=[O:17])[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=1

참가 물질

5

반응물 3

HCID 111,2-DichloroethaneHCID 64798Diphenylpropionic acidHCID 231360Piperazin-2-one

생성물 1

HCID 223131444-(3,3-Diphenylpropanoyl)piperazin-2-one수율 80%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To a solution of piperazin-2-one (100 m g, 1 mmol), 3,3-diphenylpropanoic acid (226 mg, 1 mmol) was added EDC (382 mg, 2 mmol) in dichloromethane (5 mL). The solution was stirred at room temperature overnight and concentrated in vacuo. The residue was diluted with EtOAc, and the mixture was washed consecutively with saturated aqueous NaHCO3 and brine. The organic layer was dried (Na2SO4), filtered, and concentrated in vacuo. The crude material was purified by flash column chromatography (2:98 MeOH/DCM) to give the desired 4-(3,3-diphenylpropanoyl)piperazin-2-one product (compound 4) (246 mg, 80%) as a white powder.

후처리

  1. concentrationconcentrated in vacuo
  2. additionThe residue was diluted with EtOAc
  3. washthe mixture was washed consecutively with saturated aqueous NaHCO3 and brine
  4. dry with materialThe organic layer was dried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe crude material was purified by flash column chromatography (2:98 MeOH/DCM)

출처 및 근거

ORD 기록
ord-d5dbfa3155804983a8a3fd52a2d9a10c
출처 데이터셋
uspto-grants-2014_01
특허 번호
US08629149B2

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