2-Amino-4-methylphenol → 5-(5-Methylbenzoxazol-2-yl)-2-methyl-1-(tetrahydropyran-4-yl)benzimidazole

HRID 74207

반응식

HRID 74207 반응식
Cl.[CH3:2][C:3]1[N:7]([CH:8]2[CH2:13][CH2:12][O:11][CH2:10][CH2:9]2)[C:6]2[CH:14]=[CH:15][C:16]([C:18]([OH:20])=O)=[CH:17][C:5]=2[N:4]=1.[NH2:21][C:22]1[CH:27]=[C:26]([CH3:28])[CH:25]=[CH:24][C:23]=1O.CCN=C=NCCCN(C)C.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1.O.CN(C=O)C>[CH3:28][C:26]1[CH:25]=[CH:24][C:23]2[O:20][C:18]([C:16]3[CH:15]=[CH:14][C:6]4[N:7]([CH:8]5[CH2:9][CH2:10][O:11][CH2:12][CH2:13]5)[C:3]([CH3:2])=[N:4][C:5]=4[CH:17]=3)=[N:21][C:22]=2[CH:27]=1

참가 물질

8

반응물 4

HCID 72642-Amino-4-methylphenolHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 521998p-Toluenesulfonic acid monohydrateHCID 674984452-methyl-1-(tetrahydropyran-4-yl)benzimidazole-5-carboxylic acid HCl salt

생성물 1

HCID 674981315-(5-Methylbenzoxazol-2-yl)-2-methyl-1-(tetrahydropyran-4-yl)benzimidazole수율 28.5%

시약·촉매·용매 3

HCID 962Water용매HCID 1140Toluene용매HCID 6228Dimethylformamide용매

실험 절차

2-methyl-1-(tetrahydropyran-4-yl)benzimidazole-5-carboxylic acid HCl salt (see Working Example 4-3) (0.25 g, 0.96 mmol), 2-amino-4-methylphenol (0.13 g, 1.05 mmol), anhydrous DMF (500 mL) and WSC (0.22 g, 1.14 mmol) were stirred for 3 hours at room temperature. After the reaction was complete, water (50 mL) was added, the precipitated crystals were filtered off, and the filter residue was extracted with water/chloroform. After the organic layer was dried over anhydrous sodium sulfate, filtration and concentration gave crystals that were dissolved in toluene (5 mL), to which p-toluenesulfonic acid hydrate (0.43 g, 2.26 mmol) was added and this was stirred at reflux for 2 hours. After the solvent was concentrated at reduced pressure, water (5 mL) was added and the solid obtained was filtered off, and after washing with water, drying at reduced pressure at 50° C. yielded the title compound (95 mg, 28.5% yield) as a light yellow solid.

후처리

  1. filtrationthe precipitated crystals were filtered off
  2. extractionthe filter residue was extracted with water/chloroform
  3. dry with materialAfter the organic layer was dried over anhydrous sodium sulfate, filtration and concentration
  4. customgave crystals that
  5. additionwas added
  6. temperatureat reflux for 2 hours
  7. concentrationAfter the solvent was concentrated at reduced pressure, water (5 mL)
  8. additionwas added
  9. customthe solid obtained
  10. filtrationwas filtered off
  11. washafter washing with water
  12. customdrying at reduced pressure at 50° C.

출처 및 근거

ORD 기록
ord-e8b4da61d4224b4a9fdc799b0af361e5
출처 데이터셋
uspto-grants-2014_09
특허 번호
US08829035B2

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