Diethyl Ether → 3,4-Dihydro-4,4-dimethyl-6-acetyl-1-(1,1-dimethlethyl)naphthalene

HRID 1388

반응식

HRID 1388 반응식
[CH3:1][C:2]1([CH3:13])[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:5](=O)[CH2:4][CH2:3]1.[Li][C:15]([CH3:18])([CH3:17])[CH3:16].O=S(Cl)Cl.[CH3:23][CH2:24][O:25]CC>>[CH3:1][C:2]1([CH3:13])[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([C:24](=[O:25])[CH3:23])[CH:10]=2)[C:5]([C:15]([CH3:18])([CH3:17])[CH3:16])=[CH:4][CH2:3]1

참가 물질

5

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온도
-78 °C

실험 절차

To a solution of 6-(2-methyl-1,3-dioxolan-2-yl)!-3,4-dihydro-4,4-dimethylnaphthlen-1(2H)-one ((Compound D15, 353 mg, 1.36 mmol) in 3 ml of dry ether at -78° C. was added dropwise t-BuLi (1 ml, 1.7 mmol, 1.7M solution in pentane). This dear light yellow solution was left at -78° C. for 30 min. Then, fleshly distilled SOCl2 (0.15 ml, 2.0 mmol) was added. The reaction mixture was stirred at -78° C. for additional 30 min and thereafter slowly warmed to room temperature. The reaction was quenched by addition of saturated NH4Cl. The white solids were removed by filtration and the clear solution was concentrated to an oil, and purified by column chromatography with ethyl acetate/hexane (1/10) to give the title compound as a yellow oil.

후처리

  1. temperatureslowly warmed to room temperature
  2. customThe reaction was quenched by addition of saturated NH4Cl
  3. customThe white solids were removed by filtration
  4. concentrationthe clear solution was concentrated to an oil
  5. custompurified by column chromatography with ethyl acetate/hexane (1/10)

출처 및 근거

ORD 기록
ord-130b3a00a9dc43f5a473799157e45ada
출처 데이터셋
uspto-grants-1998_03
특허 번호
US05723666

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