o-Bromocumene → 1-(3-Benzyl-phenyl)-2-(S)-isopropyl-4-(2-isopropyl-phenyl)-piperazine

HRID 971374

반응식

HRID 971374 반응식
[CH2:1]([C:8]1[CH:9]=[C:10]([N:14]2[CH2:19][CH2:18][NH:17][CH2:16][C@@H:15]2[CH:20]([CH3:22])[CH3:21])[CH:11]=[CH:12][CH:13]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Br[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=1[CH:30]([CH3:32])[CH3:31].CC([O-])(C)C.[Na+].COCCOC.CCO>C1(C)C=CC=CC=1.CCOCC.C1(P(C2C=CC=CC=2)C2C=CC=CC=2C2C=CC=CC=2N(C)C)C=CC=CC=1>[CH2:1]([C:8]1[CH:9]=[C:10]([N:14]2[CH2:19][CH2:18][N:17]([C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=3[CH:30]([CH3:32])[CH3:31])[CH2:16][C@@H:15]2[CH:20]([CH3:22])[CH3:21])[CH:11]=[CH:12][CH:13]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

참가 물질

8

반응물 4

HCID 23475o-BromocumeneHCID 20074477Dimethoxyethane ethanolHCID 207600044-(3'-Benzylphenyl)-3-(S)-isopropyl-piperazineHCID 23676156Sodium t-butoxide

생성물 1

HCID 691295551-(3-Benzyl-phenyl)-2-(S)-isopropyl-4-(2-isopropyl-phenyl)-piperazine수율 62.2%

시약·촉매·용매 3

HCID 27349392'-(diphenylphosphanyl)-N,N-dimethyl-[1,1'-biphenyl]-2-amine촉매HCID 1140Toluene용매HCID 3283Diethyl Ether용매

반응 조건

온도
80 °C

실험 절차

110.7 mg (0.38 mmol) 4-(3′-Benzylphenyl)-3-(S)-isopropyl-piperazine (88a), 123.5 mg (0.62 mmol, 1.65 eq.) 1-Bromo-2-isopropyl-benzene 11.7 mg (12.7 μmol, 0.034 eq.) Pd2(dba)3, 7.4 mg (19.3 μmol, 0.05 eq.) 2-Diphenylphosphino-2′-dimethylamino-biphenyl and 87.3 mg (0.91 mmol, 2.42 eq.) NaOt-Bu were dissolved in 5 ml dry toluene. The resulting mixture was heated under N2 at 80° C. for 15.5 h. After cooling to room temperature the mixture was diluted with ether and washed with brine. The comb. org. fractions were dried over Na2SO4 and evaporated. Column chromatography (hexanes/EtOAc (9+1)) yielded 96.5 mg (0.23 mmol, 62.20%) 1-(3-Benzyl-phenyl)-2-(S)-isopropyl-4-(2-isopropyl-phenyl)-piperazine (89) as a clear oil.

후처리

  1. temperatureAfter cooling to room temperature the mixture
  2. washwashed with brine
  3. dry with materialfractions were dried over Na2SO4
  4. customevaporated

출처 및 근거

ORD 기록
ord-22028e2f0fd24a9189311b03f7571aaf
출처 데이터셋
uspto-grants-2007_12
특허 번호
US07312246B2

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