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Chloromethyl Methyl Ether → 4-[1-(Trifluoromethyl)-1-(methoxymethoxy)-2,2,2-trifluoroethyl]styrene

HRID 1007061
ノート
印刷プレビュー

反応式

HRID 1007061 の反応式
[F:1][C:2]([F:18])([F:17])[C:3]([C:9]1[CH:14]=[CH:13][C:12]([CH:15]=[CH2:16])=[CH:11][CH:10]=1)([OH:8])[C:4]([F:7])([F:6])[F:5].[H-].[Na+].[CH3:21][O:22][CH2:23]Cl>C1COCC1>[F:1][C:2]([F:17])([F:18])[C:3]([C:9]1[CH:14]=[CH:13][C:12]([CH:15]=[CH2:16])=[CH:11][CH:10]=1)([O:8][CH2:21][O:22][CH3:23])[C:4]([F:6])([F:5])[F:7]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 7864Chloromethyl Methyl EtherHCID 24758Sodium hydrideHCID 27823772-(4-Ethenylphenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol

生成物 1

HCID 225064894-[1-(Trifluoromethyl)-1-(methoxymethoxy)-2,2,2-trifluoroethyl]styrene収率 34%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

A solution of 1,1,1,3,3,3-hexafluoro-2-(4-vinylphenyl)-2-propanol (5.00 g, 18.51 mmol) in THF (10 mL)was slowly added to a mixture of NaH (60% dispersion, 968 mg, 24.20 mmol), washed with pentane, and THF (50 mL). The reaction mixture was allowed to stir at room temperature for 1 h, then cooled to −78° C. using a dry ice/acetone bath followed by the addition of chloromethyl methyl ether (1.50 mL, 19.75 mmol) in THF (5 mL). The reaction mixture was allowed to slowly warm to room temperature overnight, quenched with H2O, concentrated, and partitioned between ether/H2O. The combined extracts were washed with saturated NaHCO3, brine, dried (Na2SO4), and concentrated to provide a crude oil. This material was purified by Kugelrohr distillation (bp 65-9° C., 1.3 mm), followed by column chromatography on silica gel using 50:1 hexane/ethyl acetate to provide 1.96 g (34%) of a colorless oil; 1H NMR (CDCl3) δ 7.60 (d, 2ArH), 7.50 (d, 2ArH), 6.75 (dd, CH=), 5.85 (dd ═CHH), 5.40 (dd ═CHH), 4.85 (s, CH2), 3.60 (s, Me).

後処理

  1. washwashed with pentane, and THF (50 mL)
  2. temperaturecooled to −78° C.
  3. temperatureto slowly warm to room temperature overnight
  4. customquenched with H2O
  5. concentrationconcentrated
  6. custompartitioned between ether/H2O
  7. washThe combined extracts were washed with saturated NaHCO3, brine
  8. dry with materialdried (Na2SO4)
  9. concentrationconcentrated
  10. customto provide a crude oil
  11. distillationThis material was purified by Kugelrohr distillation (bp 65-9° C., 1.3 mm)

出典と根拠

ORDレコード
ord-9efe96659a194abea14d9aecb105d3b4
出典データセット
uspto-grants-2004_09
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US06794109B2

反応ノート

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