Cesium carbonate → benzhydrylidene-[6-methyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-amine

HRID 905988노트

반응식

HRID 905988 반응식
Br[C:2]1[N:3]=[C:4]2[CH:10]=[C:9]([CH3:11])[N:8]([CH2:12][O:13][CH2:14][CH2:15][Si:16]([CH3:19])([CH3:18])[CH3:17])[C:5]2=[N:6][CH:7]=1.[C:20](=[NH:33])([C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1)[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1.C([O-])([O-])=O.[Cs+].[Cs+].C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1>C1COCC1.CC([O-])=O.CC([O-])=O.[Pd+2]>[C:20](=[N:33][C:2]1[N:3]=[C:4]2[CH:10]=[C:9]([CH3:11])[N:8]([CH2:12][O:13][CH2:14][CH2:15][Si:16]([CH3:19])([CH3:18])[CH3:17])[C:5]2=[N:6][CH:7]=1)([C:27]1[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=1)[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1

참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 136809Benzophenone imineHCID 634876Binap, (A+-)-HCID 866423052-bromo-6-methyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine

생성물 1

HCID 86642306benzhydrylidene-[6-methyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-amine수율 36%

시약·촉매·용매 2

HCID 167845palladium(II) acetate촉매HCID 8028Tetrahydrofuran용매

반응 조건

온도
100 °C

실험 절차

2-Bromo-6-methyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine (0.340 g, 0.993 mmol), benzhydrylideneamine (0.18 mL, 1.09 mmol), Cs2CO3 (648 mg, 1.99 mmol), Pd(OAc)2 (22 mg, 0.099 mmol) and BINAP (62 mg, 0.099 mmol) were dissolved in THF (10 mL) and heated at 100° C. for 64 hr, cooled to RT, partitioned between EtOAc and brine. The organic layer was dried (MgSO4), filtered, concentrated, and purified by SiO2 chromatography (40 g SiO2, hexanes/EtOAc 0-35% EtOAc) to give 158 mg of benzhydrylidene-[6-methyl-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-amine as a yellow liquid (36% yield).

후처리

  1. temperaturecooled to RT
  2. custompartitioned between EtOAc and brine
  3. dry with materialThe organic layer was dried (MgSO4)
  4. filtrationfiltered
  5. concentrationconcentrated
  6. custompurified by SiO2 chromatography (40 g SiO2, hexanes/EtOAc 0-35% EtOAc)

출처 및 근거

ORD 기록
ord-454f359faaf4401ab72e071484cb1a73
출처 데이터셋
uspto-grants-2011_09
특허 번호
US08012974B2

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