Hydrochloric Acid → 4'-Acetoxy-5-benzyloxy-3-fluorostilbene

HRID 78884

反応式

HRID 78884 の反応式
[CH2:1]([O:8][C:9]1[CH:10]=[C:11]([F:16])[CH:12]=[C:13](Br)[CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:17]([O:20][C:21]1[CH:28]=[CH:27][C:24]([CH:25]=[CH2:26])=[CH:23][CH:22]=1)(=[O:19])[CH3:18].CCN(CC)CC.Cl>CN(C=O)C.CC([O-])=O.CC([O-])=O.[Pd+2].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.CCOC(C)=O>[C:17]([O:20][C:21]1[CH:28]=[CH:27][C:24]([CH:25]=[CH:26][C:13]2[CH:14]=[C:9]([O:8][CH2:1][C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)[CH:10]=[C:11]([F:16])[CH:12]=2)=[CH:23][CH:22]=1)(=[O:19])[CH3:18]

参加物

9

反応物 4

HCID 313Hydrochloric AcidHCID 8471TriethylamineHCID 758214-Ethenylphenyl acetateHCID 112545161-(Benzyloxy)-3-bromo-5-fluorobenzene

生成物 1

HCID 687420264'-Acetoxy-5-benzyloxy-3-fluorostilbene収率 88%

試薬・触媒・溶媒 4

HCID 80271Tri-o-tolylphosphine触媒HCID 167845palladium(II) acetate触媒HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
100 °C

実験手順

A mixture of 5-benzyloxy-3-fluorophenyl bromide (2.81 g, 10 mmol), Pd(OAc)2 (0.067 g, 0.3 mmol), tri-o-tolylphosphine (0.18 g, 0.6 mmol), 4-acetoxystyrene (2.03 g, 12.5 mmol), and Et3N (1.26 g, 12.5 mmol) in 20 mL dry DMF was stirred at 100° C. for 24 hours under N2. The dark mixture was distributed between EtOAc and 1N HCl. The organic layer was separated and washed with water and brine, dried over Na2SO4, filtered, and evaporated. After flash column, the desired product (3.19 g, 88%) was obtained. Data are: 1H NMR (CDCl3, 300 MHz) δ 7.51-7.34 (m, 7H), 7.11-6.82 (m, 6H), 6.60 (dt, 1H); 13C NMR (CDCl3, 75 MHz) δ 169.66, 165.64, 162.40, 160.47, 150.58, 140.07 (d), 136.59, 134.76, 129.41, 128.91, 128.41, 128.04 (d), 127.79 (d), 122.11, 109.36 (d), 105.86 (d), 101.91 (d), 70.57, 21.37; 19F NMR (CDCl3, 282 MHz) δ −31675.70 (t); HRMS (EI+) found 362.1302 M+, calcd 362.1318 for C23H19FO3.

後処理

  1. customThe organic layer was separated
  2. washwashed with water and brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. customevaporated

出典と根拠

ORDレコード
ord-6671ef84d26e4bdab060dfa5e962ba4c
出典データセット
uspto-grants-2014_09
特許番号
US08841477B2

関連ノート

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