2,3-Dihydroxybutanedioic Acid → 4-Formylbenzyl 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl ether

HRID 260588

반응식

HRID 260588 반응식
[H-].C([Al+]CC(C)C)C(C)C.[CH3:11][C:12]1([CH3:34])[CH2:21][CH2:20][C:19]([CH3:23])([CH3:22])[C:18]2[CH:17]=[C:16]([O:24][CH2:25][C:26]3[CH:31]=[CH:30][C:29]([C:32]#N)=[CH:28][CH:27]=3)[CH:15]=[CH:14][C:13]1=2.C(O)(=O)C(C(C(O)=O)O)[OH:37].S([O-])([O-])(=O)=O.[Na+].[Na+]>CCOCC>[CH3:11][C:12]1([CH3:34])[CH2:21][CH2:20][C:19]([CH3:23])([CH3:22])[C:18]2[CH:17]=[C:16]([O:24][CH2:25][C:26]3[CH:31]=[CH:30][C:29]([CH:32]=[O:37])=[CH:28][CH:27]=3)[CH:15]=[CH:14][C:13]1=2

참가 물질

6

반응 조건

온도
25 °C

실험 절차

15.5 ml (19.7 mmol) of diisobutylaluminum hydride solution (20% in hexane) were added dropwise under nitrogen to a solution of 3 g (9.4 mmol) of 4-cyanobenzyl 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl ether in 40 ml of dry ether at 25° C. The mixture was stirred at 25° C. for 40 min and then 250 ml of saturated tartaric acid solution were added dropwise. Subsequently, a little sodium sulfate solution was added, and the phases were separated. The aqueous phase was extracted with ether, and the organic extract was washed with saturated tartaric acid solution and water, dried over Na2SO4 and concentrated. Recrystallization from methanol resulted in 1.4 g of the title compound of melting point 102°-104° C.

후처리

  1. customthe phases were separated
  2. extractionThe aqueous phase was extracted with ether
  3. extractionthe organic extract
  4. washwas washed with saturated tartaric acid solution and water
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated
  7. customRecrystallization from methanol

출처 및 근거

ORD 기록
ord-9b1e58a9d890461b98713f01079a85cd
출처 데이터셋
uspto-grants-1996_06
특허 번호
US05527945

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