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Diisopropylethylamine → (2S,4S)-1-tert-butyl 2-(3-chloro-8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen-9-yl) 4-methylpyrrolidine-1,2-dicarboxylate

HRID 1412944
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HRID 1412944 반응식
Br[CH:2]1[CH2:20][CH2:19][C:5]2=[CH:6][C:7]3[C:8]4[CH:17]=[CH:16][C:15]([Cl:18])=[CH:14][C:9]=4[CH2:10][O:11][C:12]=3[CH:13]=[C:4]2[C:3]1=[O:21].[C:22]([O:26][C:27]([N:29]1[CH2:33][C@@H:32]([CH3:34])[CH2:31][C@H:30]1[C:35]([OH:37])=[O:36])=[O:28])([CH3:25])([CH3:24])[CH3:23].CCN(C(C)C)C(C)C>CC#N.CCOC(C)=O>[CH3:34][C@@H:32]1[CH2:33][N:29]([C:27]([O:26][C:22]([CH3:23])([CH3:25])[CH3:24])=[O:28])[C@H:30]([C:35]([O:37][CH:2]2[CH2:20][CH2:19][C:5]3=[CH:6][C:7]4[C:8]5[CH:17]=[CH:16][C:15]([Cl:18])=[CH:14][C:9]=5[CH2:10][O:11][C:12]=4[CH:13]=[C:4]3[C:3]2=[O:21])=[O:36])[CH2:31]1
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참가 물질

6

반응물 3

HCID 81531DiisopropylethylamineHCID 26596883(4S)-1-(tert-Butoxycarbonyl)-4-methyl-L-prolineHCID 696732929-bromo-3-chloro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one

생성물 1

HCID 67682138(2S,4S)-1-tert-butyl 2-(3-chloro-8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen-9-yl) 4-methylpyrrolidine-1,2-dicarboxylate수율 70.5%

시약·촉매·용매 2

HCID 6342
Acetonitrile
용매
HCID 8857Ethyl Acetate용매

실험 절차

To a solution of 9-bromo-3-chloro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (1.32 g, 3.63 mmol) in MeCN (40 mL) was added (2S,4S)-1-(tert-butoxycarbonyl)-4-methylpyrrolidine-2-carboxylic acid (1.0 g, 4.36 mmol) and DIPEA (0.7 mL, 3.99 mmol). After stirring for 18 h, the solution was diluted with EtOAc and washed successively with saturated aqueous NaHCO3 and brine. The organics were dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue was purified by silica column chromatography (10% to 40% EtOAc/hexanes) to afford (2S,4S)-1-tert-butyl 2-(3-chloro-8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen-9-yl) 4-methylpyrrolidine-1,2-dicarboxylate (1.31 g, 70%).

후처리

  1. washwashed successively with saturated aqueous NaHCO3 and brine
  2. dry with materialThe organics were dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe crude residue was purified by silica column chromatography (10% to 40% EtOAc/hexanes)

출처 및 근거

ORD 기록
ord-dc2d02e5fee840778303dfb58c9c3ddc
출처 데이터셋
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08921341B2

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