1,8-Diazabicyclo(5.4.0)undec-7-ene → 1-[(2,6,7-Trimethoxyquinoxalin-3-yl)aminocarbonyl]-4-(3-methoxyphenyl)piperazine

HRID 1878300노트

반응식

HRID 1878300 반응식
[CH3:1][O:2][C:3]1[C:12]([NH:13][C:14](=[O:18])OCC)=[N:11][C:10]2[C:5](=[CH:6][C:7]([O:21][CH3:22])=[C:8]([O:19][CH3:20])[CH:9]=2)[N:4]=1.[CH3:23][O:24][C:25]1[CH:26]=[C:27]([N:31]2[CH2:36][CH2:35][NH:34][CH2:33][CH2:32]2)[CH:28]=[CH:29][CH:30]=1.C1CCN2C(=NCCC2)CC1>O1CCCC1>[CH3:1][O:2][C:3]1[C:12]([NH:13][C:14]([N:34]2[CH2:33][CH2:32][N:31]([C:27]3[CH:28]=[CH:29][CH:30]=[C:25]([O:24][CH3:23])[CH:26]=3)[CH2:36][CH2:35]2)=[O:18])=[N:11][C:10]2[C:5](=[CH:6][C:7]([O:21][CH3:22])=[C:8]([O:19][CH3:20])[CH:9]=2)[N:4]=1

참가 물질

5

반응물 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 81430N-(3-methoxyphenyl)piperazineHCID 69244380Ethyl N-(2,6,7-trimethoxyquinoxalin-3-yl)carbamate

생성물 1

HCID 692445151-[(2,6,7-Trimethoxyquinoxalin-3-yl)aminocarbonyl]-4-(3-methoxyphenyl)piperazine수율 64%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

반응 조건

온도
70 °C

실험 절차

Ethyl N-(2,6,7-trimethoxyquinoxalin-3-yl)carbamate (28 mg, 0.091 mmol) and 1-(3-methoxy phenyl)piperazine (27 mg, 0.18 mmol) were dissolved in tetrahydrofuran (2 ml) at room temperature and thereto DBU (27 mg, 0.18 mmol) was added. The resulting mixture was stirred at 70° C. for 7 hours and concentrated under the reduced pressure to remove the solvent, and purified by SiO2 column chromatography. Extraction of the residue with a n-hexane:ethyl acetate (1:2) mixture and concentration gave 26 mg of the titled compound (yield, 64%). 1H NMR (300 MHz, CDCl3) δ 3.27-3.29 (m, 4H), 3.78-3.81 (m, 7H), 3.94 (s, 3H), 3.97-3.98 (m, 1H), 4.00 (s, 3H), 4.15 (s, 3H), 6.47-6.49 (m, 2H), 6.56-6.58 (m, 1H), 7.11 (s, 1H), 7.14-7.27 (m, 3H).

후처리

  1. concentrationconcentrated under the reduced pressure
  2. customto remove the solvent
  3. custompurified by SiO2 column chromatography
  4. extractionExtraction of the residue
  5. concentrationwith a n-hexane:ethyl acetate (1:2) mixture and concentration

출처 및 근거

ORD 기록
ord-b2248bce74144ea8a7ea0eebb67ef53f
출처 데이터셋
uspto-grants-2012_11
특허 번호
US08314100B2

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