Cesium carbonate → 3-(4-Methoxy-2-phenoxy-phenylamino)-phthalic acid dimethyl ester

HRID 448385ノート

反応式

HRID 448385 の反応式
[CH3:1][O:2][C:3](=[O:15])[C:4]1[C:5](=[C:10](I)[CH:11]=[CH:12][CH:13]=1)[C:6]([O:8][CH3:9])=[O:7].[CH3:16][O:17][C:18]1[CH:23]=[CH:22][C:21]([NH2:24])=[C:20]([O:25][C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[CH:19]=1.C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>C1(C)C=CC=CC=1.C(Cl)Cl.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:1][O:2][C:3](=[O:15])[C:4]1[C:5](=[C:10]([NH:24][C:21]2[CH:22]=[CH:23][C:18]([O:17][CH3:16])=[CH:19][C:20]=2[O:25][C:26]2[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=2)[CH:11]=[CH:12][CH:13]=1)[C:6]([O:8][CH3:9])=[O:7]

参加物

8

反応物 4

HCID 10796Cesium carbonateHCID 634876Binap, (A+-)-HCID 2326127Dimethyl 3-iodophthalateHCID 583072004-Methoxy-2-phenoxyaniline

生成物 1

HCID 583071863-(4-Methoxy-2-phenoxy-phenylamino)-phthalic acid dimethyl ester収率 71%

試薬・触媒・溶媒 3

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 1140Toluene溶媒HCID 6344Dichloromethane溶媒

実験手順

A mixture of 3-iodophthalic acid dimethyl ester (1.0 g, 3.1 mmol), 4-methoxy-2-phenoxy-phenylamine (0.67 g, 3.1 mmol), Pd2(dba)3 (0.13 g, 0.14 mmol), rac-BINAP (0.058 g, 0.093 mmol), and cesium carbonate (1.4 g, 4.3 mmol), in 6 mL toluene was heated to reflux under nitrogen for 16 hours. The reaction mixture was cooled, diluted with CH2Cl2 (10 mL), and filtered through Celite, and the filter was washed with additional CH2Cl2 (30 mL). The filtrate was evaporated in vacuo, and the residue was purified by ISCO silica gel flash chromatography using a hexanes-ethyl acetate gradient, eluting 0.9 g of the product at 8:2 hexanes-ethyl acetate, in 71% yield; 1H NMR (CDCl3) δ 3.74 (s, 3H), 3.76 (s, 3H), 3.84 (s, 3H), 6.60 (d, J=2.9 Hz, 1H), 6.69 (dd, J=8.7 Hz, J=2.9 Hz, 1H), 6.85-6.89 (m, 2H), 6.97-7.07 (m, 2H), 7.09 (dd, J=8.5 Hz, J=1.0 Hz, 1H), 7.22-7.29 (m, 4H), 7.84 (s, 1H).

後処理

  1. temperatureto reflux under nitrogen for 16 hours
  2. temperatureThe reaction mixture was cooled
  3. filtrationfiltered through Celite
  4. washthe filter was washed with additional CH2Cl2 (30 mL)
  5. customThe filtrate was evaporated in vacuo
  6. customthe residue was purified by ISCO silica gel flash chromatography
  7. washeluting 0.9 g of the product at 8:2 hexanes-ethyl acetate

出典と根拠

ORDレコード
ord-40d875da21094d1bbfea2435676b638d
出典データセット
uspto-grants-2013_07
特許番号
US08481568B2

反応ノート

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