Trifluoromethanesulfonic acid → 1-((4-Bromo-2-chloro-5-fluorobenzyl)oxy)adamantane

HRID 1849511ノート

反応式

HRID 1849511 の反応式
Cl[C:2](Cl)(Cl)[C:3](=N)[O:4][CH2:5][C:6]1[CH:11]=[C:10]([F:12])[C:9]([Br:13])=[CH:8][C:7]=1[Cl:14].[C:18]12(O)[CH2:27]C3C[CH:24]([CH2:26][CH:20]([CH2:21]3)[CH2:19]1)[CH2:25]2.FC(F)(F)S(O)(=O)=O>C(Cl)Cl.C1CCCCC1>[Br:13][C:9]1[C:10]([F:12])=[CH:11][C:6]([CH2:5][O:4][C:3]23[CH2:27][CH:18]4[CH2:19][CH:20]([CH2:26][CH:24]([CH2:25]4)[CH2:2]2)[CH2:21]3)=[C:7]([Cl:14])[CH:8]=1

参加物

6

反応物 3

HCID 62406Trifluoromethanesulfonic acidHCID 641521-AdamantanolHCID 867028534-Bromo-2-chloro-5-fluorobenzyl 2,2,2-trichloroacetimidate

生成物 1

HCID 867028541-((4-Bromo-2-chloro-5-fluorobenzyl)oxy)adamantane収率 44%

試薬・触媒・溶媒 2

HCID 6344Dichloromethane溶媒HCID 8078Cyclohexane溶媒

実験手順

To a solution of 4-bromo-2-chloro-5-fluorobenzyl 2,2,2-trichloroacetimidate (3.95 g, 16.49 mmol) and 1-adamantanol (0.65 g, 4.26 mmol) in methylene chloride (15 mL) and cyclohexane (30 mL) was added trifluoromethanesulfonic acid (0.04 mL, 0.45 mmol) at 0° C. The reaction mixture was stirred for 56 h at ambient temperature and quenched by addition of saturated sodium bicarbonate solution (10 mL), and then diluted with methylene chloride (100 mL). The organic layer was separated and washed with brine; dried over anhydrous sodium sulfate and concentrated in vacuo. Purification of the residue by column chromatography (5% ethyl acetate in hexanes) and recrystallization from methanol afforded 1-((4-bromo-2-chloro-5-fluorobenzyl)-oxy)adamantane as a colorless solid (0.70 g, 43%): 1H NMR (300 MHz, CDCl3) δ 7.47 (d, J=6.3 Hz, 1H), 7.37 (d, J=9.3 Hz, 1H), 4.48 (s, 2H), 2.16 (br s, 3H), 1.82-1.80 (m, 6H), 1.70-1.55 (m, 6H).

後処理

  1. customquenched by addition of saturated sodium bicarbonate solution (10 mL)
  2. additiondiluted with methylene chloride (100 mL)
  3. customThe organic layer was separated
  4. washwashed with brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. concentrationconcentrated in vacuo
  7. customPurification of the residue
  8. customby column chromatography (5% ethyl acetate in hexanes) and recrystallization from methanol

出典と根拠

ORDレコード
ord-0ecec82c0fce4720a5386623a1dc15ed
出典データセット
uspto-grants-2015_02
特許番号
US08952169B2

反応ノート

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