Toluene → 5'-Bromo-2',6-difluoro-[1,1'-biphenyl]-2-ol

HRID 1400772ノート

反応式

HRID 1400772 の反応式
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([OH:8])[C:3]=1B(O)O.C([O-])([O-])=O.[Na+].[Na+].C1(C)C=CC=CC=1.[Br:25][C:26]1[CH:31]=[CH:30][C:29]([F:32])=[C:28](I)[CH:27]=1>CO.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Br:25][C:26]1[CH:27]=[CH:28][C:29]([F:32])=[C:30]([C:3]2[C:4]([OH:8])=[CH:5][CH:6]=[CH:7][C:2]=2[F:1])[CH:31]=1

参加物

7

反応物 4

HCID 1140TolueneHCID 10340Sodium CarbonateHCID 27827504-Bromo-1-fluoro-2-iodobenzeneHCID 532162802-Fluoro-6-hydroxyphenylboronic acid

生成物 1

HCID 867108255'-Bromo-2',6-difluoro-[1,1'-biphenyl]-2-ol収率 89%

試薬・触媒・溶媒 2

HCID 178418397HCID 178418397、化合物触媒HCID 887Methanol溶媒

反応条件

温度
105 °C

実験手順

(2-Fluoro-6-hydroxyphenyl)boronic acid (50 mg, 0.321 mmol, 1.0 equiv), Pd(PPh3)4 (37.1 mg, 0.032 mmol, 0.1 equiv) and aqueous Na2CO3 (2 M, 401 μl, 0.802 mmol, 2.5 equiv) were mixed with toluene (2 mL) in a sealed microwave tube. 4-Bromo-1-fluoro-2-iodobenzene (96 mg, 0.321 mmol, 1.0 equiv) in MeOH (1.00 mL) was added to the above mixture. The resulted mixture was heated at 105° C. overnight. TLC showed the starting material disappeared and a new spot was produced. The reaction was allowed to cool to ambient temperature and then loaded on 12 g ISCO column and purified by 30% EtOAc/hexane to afford 5′-bromo-2′,6-difluoro-[1,1′-biphenyl]-2-ol (81 mg, 89%). 1H NMR (400 MHz, CHLOROFORM-d) δ 7.54 (dd, J=6.3, 2.5 Hz, 1H), 7.48 (ddd, J=8.7, 4.5, 2.6 Hz, 1H), 7.21 (td, J=8.2, 6.7 Hz, 1H), 7.07 (t, J=8.9 Hz, 1H), 6.81 (d, J=8.3 Hz, 1H), 6.71 (t, J=8.8 Hz, 1H). LCMS (M+1)=286.1.

後処理

  1. customa new spot was produced
  2. temperatureto cool to ambient temperature
  3. custompurified by 30% EtOAc/hexane

出典と根拠

ORDレコード
ord-e738820b20ae42f688c3f0b5e687080d
出典データセット
uspto-grants-2014_12
特許番号
US08906929B2

反応ノート

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