Cesium carbonate → HCID 178445718、化合物

HRID 2404081ノート

反応式

HRID 2404081 の反応式
[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([OH:12])[CH:6]=[CH:5]2.C(=O)([O-])[O-].[Cs+].[Cs+].CS(O[C@H:24]1[CH2:29][CH2:28][C@H:27]([C:30]([CH3:33])([CH3:32])[CH3:31])[CH2:26][CH2:25]1)(=O)=O>C(O)(C)(C)C.CC(=O)CC>[Br:1][C:2]1[CH:11]=[CH:10][C:9]2[C:4](=[CH:5][CH:6]=[C:7]([O:12][C@H:24]3[CH2:29][CH2:28][C@H:27]([C:30]([CH3:33])([CH3:32])[CH3:31])[CH2:26][CH2:25]3)[CH:8]=2)[CH:3]=1

参加物

5

反応物 3

HCID 10796Cesium carbonateHCID 271446-Bromo-2-naphthalenolHCID 178445816HCID 178445816、化合物

生成物 1

HCID 178445718HCID 178445718、化合物収率 32%

試薬・触媒・溶媒 1

HCID 86642925t-Butanol 2-butanone溶媒

反応条件

温度
110 °C

実験手順

6-bromonaphthalen-2-ol (CAS no. 15231-91-1) (3.0 g, 14.8 mmol, 1.0 eq.) was dissolved in a mixture of t-butanol/2-butanone (4 mL/2 mL). Then cesium carbonate (12 g, 37.2 mmol, 2.5 eq.) was added to the mixture and the mixture was stirred at 110° C. for 10 min. Then trans-4-tert-butylcyclohexyl methanesulfonate (3.48 g, 16.2 mmol, 1.1 eq.) was added to the mixture. The suspension was stirred at 110° C. under a nitrogen atmosphere for 15 h. The reaction mixture was extracted with ethyl acetate and the organic layer was purified by silica gel column chromatography using petroleum ether as eluent to give 2-bromo-6-(trans-4-tert-butylcyclohexyloxy)naphthalene as a slight yellow solid (1.7 g, yield: 32%). ESI-MS: 361.0 (M+H)+. 1H NMR (400 MHz, CDCl3) δ 7.89 (s, 1H), 7.63 (d, 1H), 7.56 (d, 1H), 7.47 (d, 1H), 7.15-7.11 (m, 2H), 4.26-4.24 (m, 1H), 2.27-2.25 (m, 2H), 1.89-1.87 (m, 2H), 1.45-1.09 (m, 5H), 0.89 (s, 9H).

後処理

  1. stirringThe suspension was stirred at 110° C. under a nitrogen atmosphere for 15 h
  2. extractionThe reaction mixture was extracted with ethyl acetate
  3. customthe organic layer was purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-2ec933a904be412cbcc526d5e642d365
出典データセット
uspto-grants-2014_08
特許番号
US08802659B2

反応ノート

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