Potassium Carbonate → [8-(2-chlorophenyl)-6-fluoro-2H-chromen-2-yl]methyl 4-methylbenzenesulfonate

HRID 902328

反応式

HRID 902328 の反応式
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([O:11][CH2:12][CH:13]2[CH:22]=[CH:21][C:20]3[C:15](=[C:16](Br)[CH:17]=[C:18]([F:23])[CH:19]=3)[O:14]2)(=[O:10])=[O:9])=[CH:4][CH:3]=1.[Cl:25][C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=1B(O)O.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.O.CC1C(P(C2C(C)=CC=CC=2)C2C(C)=CC=CC=2)=CC=CC=1.CC1C(P(C2C(C)=CC=CC=2)C2C(C)=CC=CC=2)=CC=CC=1.Cl[Pd]Cl>[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([O:11][CH2:12][CH:13]2[CH:22]=[CH:21][C:20]3[C:15](=[C:16]([C:27]4[CH:28]=[CH:29][CH:30]=[CH:31][C:26]=4[Cl:25])[CH:17]=[C:18]([F:23])[CH:19]=3)[O:14]2)(=[O:10])=[O:9])=[CH:4][CH:3]=1

参加物

7

反応物 3

HCID 11430Potassium CarbonateHCID 27343222-Chlorophenylboronic acidHCID 86609107(8-bromo-6-fluoro-2H-chromen-2-yl)methyl 4-methylbenzenesulfonate

生成物 1

HCID 86609118[8-(2-chlorophenyl)-6-fluoro-2H-chromen-2-yl]methyl 4-methylbenzenesulfonate収率 53%

試薬・触媒・溶媒 3

HCID 10876480Bis(tri-o-tolylphosphine)palladium(II) Dichloride触媒HCID 962Water溶媒HCID 312751,4-Dioxane溶媒

反応条件

温度
100 °C

実験手順

A solution of (8-bromo-6-fluoro-2H-chromen-2-yl)methyl 4-methylbenzenesulfonate, prepared in Example 37, step 5 (1.0 g, 2.42 mmol) and 2-chlorophenylboronic acid (1.14 g, 7.26 mmol) in dioxane (18 mL) was added a solution of potassium carbonate (1.0 g, 7.26 mmol) in water (6 mL) and the mixture purged with nitrogen for 20 minutes. Trans-dichlorobis(tri-o-tolylphosphine)palladium (II) (95 mg, 0.12 mmol) was added and the reaction mixture heated at 100° C. for 2 hours. The cooled reaction mixture was then partitioned between ethyl acetate (100 mL) and 2.0 M aqueous sodium hydroxide (100 mL). The organic layer was separated, washed with water (100 mL) and saturated brine (100 mL), dried over magnesium sulfate, filtered and concentrated under reduced pressure to afford a yellow oil. Purification by flash chromatography using a solvent gradient of 5 to 20% ethyl acetate in hexane gave 0.57 g (53%) of [8-(2-chlorophenyl)-6-fluoro-2H-chromen-2-yl]methyl 4-methylbenzenesulfonate as a white solid. HRMS: calcd for C23H18ClFO4S+NH4+, 462.09366. found (ESI, [M+NH4]+), 462.0916.

後処理

  1. customthe mixture purged with nitrogen for 20 minutes
  2. customThe cooled reaction mixture
  3. customwas then partitioned between ethyl acetate (100 mL) and 2.0 M aqueous sodium hydroxide (100 mL)
  4. customThe organic layer was separated
  5. washwashed with water (100 mL) and saturated brine (100 mL)
  6. dry with materialdried over magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customto afford a yellow oil
  10. customPurification by flash chromatography

出典と根拠

ORDレコード
ord-46abf995a311477fb67fab9f5008980a
出典データセット
uspto-grants-2008_04
特許番号
US07365095B2

関連ノート

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