4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenol → Methyl 7-(4-hydroxyphenyl)-2-naphthalenecarboxylate

HRID 646028ノート

反応式

HRID 646028 の反応式
FC(F)(F)S(O[C:7]1[CH:16]=[C:15]2[C:10]([CH:11]=[CH:12][C:13]([C:17]([O:19][CH3:20])=[O:18])=[CH:14]2)=[CH:9][CH:8]=1)(=O)=O.CC1(C)C(C)(C)OB([C:31]2[CH:36]=[CH:35][C:34]([OH:37])=[CH:33][CH:32]=2)O1>C(COC)OC.C([O-])([O-])=O.[Na+].[Na+]>[OH:37][C:34]1[CH:35]=[CH:36][C:31]([C:7]2[CH:16]=[C:15]3[C:10]([CH:11]=[CH:12][C:13]([C:17]([O:19][CH3:20])=[O:18])=[CH:14]3)=[CH:9][CH:8]=2)=[CH:32][CH:33]=1

参加物

5

反応物 2

HCID 27346244-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenolHCID 59264869Methyl 7-{[(trifluoromethyl)sulfonyl]oxy}-2-naphthalenecarboxylate

生成物 1

HCID 59264877Methyl 7-(4-hydroxyphenyl)-2-naphthalenecarboxylate収率 101.8%

試薬・触媒・溶媒 2

HCID 80711,2-Dimethoxyethane溶媒HCID 10340Sodium Carbonate溶媒

反応条件

温度
70 °C

実験手順

A solution of methyl 7-{[(trifluoromethyl)sulfonyl]oxy}-2-naphthalenecarboxylate (100 mg, 0.3 mmol), tetrakistriphenylphosphine palladium (14 mg, 0.012 mmol) and 4-(4,4,5,5-tetramethyl 1,3,2-dioxaborolan-2-yl-) phenol (79 mg, 0.36 mmol) in a mixture of dimethoxyethane (1.6 mL) and 2 M aqueous Na2CO3 (1.3 mL) was heated in a 70° C. oil bath for one hour. The solution was partitioned between ethyl acetate and water. The organic layer was dried with magnesium sulfate, filtered, and concentrated. The crude material was purified by chromatography on silica gel, (hexane to 3:7 ethyl acetate:hexanes) to provide the title compound (0.085 g, 95.5% as 0.20 ethyl acetate). 1H NMR (DMSO-d6): δ 9.64 (s, 1H), 8.65 (s, 1H), 8.31 (s, 1H), 8.03-7.99 (m, 2H), 7.93-7.90 (m, 2H), 7.66 (d, J=9 Hz, 2H), 6.88 (d, J=9 Hz, 2H), 3.90 (s, 3H).

後処理

  1. customThe solution was partitioned between ethyl acetate and water
  2. dry with materialThe organic layer was dried with magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe crude material was purified by chromatography on silica gel, (hexane to 3:7 ethyl acetate:hexanes)

出典と根拠

ORDレコード
ord-727903f00dbc4353aa3fd1bce37b1699
出典データセット
uspto-grants-2010_04
特許番号
US07705028B2

反応ノート

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