Trimethylphosphine → Triethyl [1-[(4-chlorophenyl)methyl]-2-(1-methylethyl)-4,5,6,7-tetrahydro-1H-benzimidazol-7-yl]methanetricarboxylate

HRID 1946526노트

반응식

HRID 1946526 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][N:9]2[C:13]3[CH:14](O)[CH2:15][CH2:16][CH2:17][C:12]=3[N:11]=[C:10]2[CH:19]([CH3:21])[CH3:20])=[CH:4][CH:3]=1.[CH2:22]([O:24][C:25]([CH:27]([C:33]([O:35][CH2:36][CH3:37])=[O:34])[C:28]([O:30][CH2:31][CH3:32])=[O:29])=[O:26])[CH3:23].CP(C)C.N(C(OC(C)C)=O)=NC(OC(C)C)=O>C1(C)C=CC=CC=1.O1CCCC1>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][N:9]2[C:13]3[CH:14]([C:27]([C:33]([O:35][CH2:36][CH3:37])=[O:34])([C:25]([O:24][CH2:22][CH3:23])=[O:26])[C:28]([O:30][CH2:31][CH3:32])=[O:29])[CH2:15][CH2:16][CH2:17][C:12]=3[N:11]=[C:10]2[CH:19]([CH3:21])[CH3:20])=[CH:4][CH:3]=1

참가 물질

7

반응물 4

HCID 68983TrimethylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 80471Triethyl methanetricarboxylateHCID 584601861-[(4-chlorophenyl)methyl]-2-(1-methylethyl)-4,5,6,7-tetrahydro-1H-benzimidazol-7-ol

생성물 1

HCID 67434822Triethyl [1-[(4-chlorophenyl)methyl]-2-(1-methylethyl)-4,5,6,7-tetrahydro-1H-benzimidazol-7-yl]methanetricarboxylate

시약·촉매·용매 2

HCID 1140Toluene용매2회HCID 8028Tetrahydrofuran용매

반응 조건

온도
-78 °C

실험 절차

To a stirred solution of Intermediate 58 (99 mg) and triethylmethanetricarboxylate (0.14 mL) in anhydrous Toluene (3 mL) and anhydrous Tetrahydrofuran (THF) (3.00 mL) under a nitrogen atmosphere was added trimethylphosphine, 1M in Toluene (0.650 mL). The reaction was then cooled to −78° C. and diisopropyl azodicarboxylate (0.13 mL) added dropwise via syringe over 1 min. The reaction was stirred at −78° C. under an atmosphere of nitrogen for 90 mins before being allowed to warm to ambient temperature and stirred for a further 1 h. The reaction was concentrated in vacuo. The residue was taken up in dichloromethane (40 mL) and washed with water (40 mL), dried (hydrophobic frit) and concentrated in vacuo. The sample was loaded in dichloromethane and purified on silica using a 0-100% ethyl acetate-cyclohexane gradient. The appropriate fractions were combined and evaporated in vacuo to give the required product (139 mg). LC/MS MH+ 519, Rt 2.15 min (5 min run).

후처리

  1. temperatureto warm to ambient temperature
  2. stirringstirred for a further 1 h
  3. concentrationThe reaction was concentrated in vacuo
  4. washwashed with water (40 mL)
  5. customdried (hydrophobic frit)
  6. concentrationconcentrated in vacuo
  7. custompurified on silica using a 0-100% ethyl acetate-cyclohexane gradient
  8. customevaporated in vacuo

출처 및 근거

ORD 기록
ord-d16e091948794b63bb39a0f04595e5c2
출처 데이터셋
uspto-grants-2013_03
특허 번호
US08399444B2

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