Alpha-Methylstyrene → 2-[2,4-Dihydroxy-5-(1-methyl-1-phenylethyl)phenyl]-4,6-bis-(2,4-dimethylphenyl)-s-triazine

HRID 265822

반응식

HRID 265822 반응식
[OH:1][C:2]1[CH:7]=[C:6]([OH:8])[CH:5]=[CH:4][C:3]=1[C:9]1[N:14]=[C:13]([C:15]2[CH:20]=[CH:19][C:18]([CH3:21])=[CH:17][C:16]=2[CH3:22])[N:12]=[C:11]([C:23]2[CH:28]=[CH:27][C:26]([CH3:29])=[CH:25][C:24]=2[CH3:30])[N:10]=1.[CH3:31][C:32]([C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1)=[CH2:33].CC=CC1C=CC=CC=1>C(OCC)(=O)C.CC(C)[O-].[Al+3].CC(C)[O-].CC(C)[O-]>[OH:1][C:2]1[CH:7]=[C:6]([OH:8])[C:5]([C:32]([CH3:33])([C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[CH3:31])=[CH:4][C:3]=1[C:9]1[N:10]=[C:11]([C:23]2[CH:28]=[CH:27][C:26]([CH3:29])=[CH:25][C:24]=2[CH3:30])[N:12]=[C:13]([C:15]2[CH:20]=[CH:19][C:18]([CH3:21])=[CH:17][C:16]=2[CH3:22])[N:14]=1

참가 물질

6

반응물 3

HCID 7407Alpha-MethylstyreneHCID 12500beta-MethylstyreneHCID 742762-(2,4-Dihydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine

생성물 1

HCID 1358436032-[2,4-Dihydroxy-5-(1-methyl-1-phenylethyl)phenyl]-4,6-bis-(2,4-dimethylphenyl)-s-triazine수율 67.7%

시약·촉매·용매 2

HCID 11143Aluminum isopropoxide촉매HCID 8857Ethyl Acetate용매

반응 조건

온도
175 °C

실험 절차

To a 1 L three-necked, round-bottomed flask equipped with a magnetic stirrer, condenser, dropping funnel, thermometer, and a nitrogen atmosphere are charged 15.0 g (37.8 mmol) of 2-(2,4-dihydroxyphenyl)-4,6-bis-(2,4-dimethylphenyl)-s-triazine and 390 mg of aluminum isopropoxide. The mixture is heated to 175° C. and 4.47 g (37.9 mmol) of α-methylstyrene are added dropwise at a rate of one drop every two seconds. A total of six equivalents of or-methyl styrene are added in this fashion over a 4.5 hour period. After cooling to room temperature, the mixture is diluted with ethyl acetate, washed twice with water and once with brine, and is dried over anhydrous magnesium sulfate. Following filtration, the solvent is removed under reduced pressure to yield a yellow solid. The crude product is purified with medium pressure chromatography with 12% ethyl acetate/heptane to afford 13.2 g of the title compound as a yellow solid; mp 168°-170° C.

후처리

  1. customTo a 1 L three-necked, round-bottomed flask equipped with a magnetic stirrer, condenser
  2. temperatureAfter cooling to room temperature
  3. washwashed twice with water and once with brine
  4. dry with materialis dried over anhydrous magnesium sulfate
  5. filtrationfiltration
  6. customthe solvent is removed under reduced pressure
  7. customto yield a yellow solid
  8. customThe crude product is purified with medium pressure chromatography with 12% ethyl acetate/heptane

출처 및 근거

ORD 기록
ord-6946a6f1f96d49218f1049ce8b692fa1
출처 데이터셋
uspto-grants-1997_07
특허 번호
US05648488

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