Cesium carbonate → Ethyl 1-methyl-4-(2-methyl-7-nitro-1-oxo-2,3-dihydro-1H-isoindol-4-yl)cyclohex-3-ene-1-carboxylate

HRID 1948086ノート

反応式

HRID 1948086 の反応式
O1CCOCC1.[CH3:7][N:8]1[CH2:16][C:15]2[C:10](=[C:11]([N+:26]([O-:28])=[O:27])[CH:12]=[CH:13][C:14]=2B2OC(C)(C)C(C)(C)O2)[C:9]1=[O:29].[CH3:30][C:31]1([C:45]([O:47][CH2:48][CH3:49])=[O:46])[CH2:36][CH2:35][C:34](OS(C(F)(F)F)(=O)=O)=[CH:33][CH2:32]1.C(=O)([O-])[O-].[Cs+].[Cs+]>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.O>[CH3:30][C:31]1([C:45]([O:47][CH2:48][CH3:49])=[O:46])[CH2:36][CH2:35][C:34]([C:14]2[CH:13]=[CH:12][C:11]([N+:26]([O-:28])=[O:27])=[C:10]3[C:15]=2[CH2:16][N:8]([CH3:7])[C:9]3=[O:29])=[CH:33][CH2:32]1

参加物

7

反応物 4

HCID 10796Cesium carbonateHCID 312751,4-DioxaneHCID 672539682-Methyl-7-nitro-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-2,3-dihydro-isoindol-1-oneHCID 86654053Ethyl 1-methyl-4-(trifluoromethylsulfonyloxy)cyclohex-3-enecarboxylate2 回

生成物 1

HCID 67254909Ethyl 1-methyl-4-(2-methyl-7-nitro-1-oxo-2,3-dihydro-1H-isoindol-4-yl)cyclohex-3-ene-1-carboxylate収率 84.3%

試薬・触媒・溶媒 2

HCID 178418397HCID 178418397、化合物触媒HCID 962Water溶媒

反応条件

温度
70 °C

実験手順

A mixture of dioxane and water (15 mL, 4:1) was degassed for 30 min. 2-Methyl-7-nitro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-isoindol-1-one (373 mg, 1.19 mmol), ethyl 1-methyl-4-{[(trifluoromethyl)sulfonyl]oxy}cyclohex-3-ene-1-carboxylate (Compound 282E, 300 mg, 0.92 mmol), Pd (PPh3)4 (106 mg, 0.092 mmol), and cesium carbonate (747 mg, 2.3 mmol) were then added. The reaction mixture was heated at 70° C. for 2 h. After cooled to room temperature, the mixture was filtered and concentrated to dryness, the residue was purified by column chromatography (SiO2, 5% ethyl acetate/dichloromethane) to give 278 mg (yield: 77%) of the desired compound. 1H NMR (CDCl3, 300 MHz): δ=1.26 (t, J=6.9 Hz, 3H), 1.76-1.78 (m, 1H), 2.07-2.22 (m, 3H), 2.40 (m, 1H), 2.80-2.42 (m, 1H), 3.21 (s, 3H), 4.15 (q, J=6.9 Hz, 2H), 5.92 (s, 1H), 7.44 (d, J=8.5 Hz, 1H), 7.70 (d, J=8.5 Hz, 1H).

後処理

  1. customwas degassed for 30 min
  2. temperatureAfter cooled to room temperature
  3. filtrationthe mixture was filtered
  4. concentrationconcentrated to dryness
  5. customthe residue was purified by column chromatography (SiO2, 5% ethyl acetate/dichloromethane)

出典と根拠

ORDレコード
ord-37c7f8114dcb477eaeb7097820c47e99
出典データセット
uspto-grants-2013_03
特許番号
US08399433B2

反応ノート

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