Sulfuric Acid → 1-[1-(4-Bromophenyl)-2-(dimethylamino)ethyl]cyclohexanol

HRID 34477

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HRID 34477 반응식
[H-].[Al+3].[Li+].[H-].[H-].[H-].S(=O)(=O)(O)O.[H-].[Al+3].[H-].[H-].[Br:16][C:17]1[CH:22]=[CH:21][C:20]([CH:23]([C:31]([N:33]([CH3:35])[CH3:34])=O)[C:24]2([OH:30])[CH2:29][CH2:28][CH2:27][CH2:26][CH2:25]2)=[CH:19][CH:18]=1.[OH-].[Na+]>C1COCC1.C1COCC1.O>[Br:16][C:17]1[CH:18]=[CH:19][C:20]([CH:23]([C:24]2([OH:30])[CH2:29][CH2:28][CH2:27][CH2:26][CH2:25]2)[CH2:31][N:33]([CH3:35])[CH3:34])=[CH:21][CH:22]=1

참가 물질

8

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온도
0 °C

실험 절차

Lithium aluminum hydride (0.7 g) was suspended in dry THF (25 ml) cooled to 0° C. and concentrated sulfuric acid (0.5 ml) cautiously added in an in situ preparation of aluminum hydride. The mixture was stirred for one hour at 0° C. and the amide, 1-[(4-bromophenyl)[dimethylaminocarbonyl]methyl]cyclohexanol (4 g, 0.012 mole) was dissolved in THF (35 ml) and added rapidly dropwise. The reaction mixture was stirred at 0° C. for one hour. A THF-water mixture (1:1 v/v 6 ml) was added slowly followed by 10% sodium hydroxide (10 ml). The mixture was filtered and the residue washed well with ethyl acetate. The combined filtrate was dried over anhydrous potassium carbonate and evaporated to an oil (3.5 g) which was converted to the hydrochloride salt using 4 N isopropanolic HCl.

후처리

  1. additionadded rapidly dropwise
  2. stirringThe reaction mixture was stirred at 0° C. for one hour
  3. filtrationThe mixture was filtered
  4. washthe residue washed well with ethyl acetate
  5. dry with materialThe combined filtrate was dried over anhydrous potassium carbonate
  6. customevaporated to an oil (3.5 g) which

출처 및 근거

ORD 기록
ord-6caa22fbf96d454c889b849950738325
출처 데이터셋
uspto-grants-1988_08
특허 번호
US04761501

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