Cesium carbonate → HCID 58307296, compound

HRID 448360Notes

Reaction equation

HRID 448360 reaction equation
[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][N:17]([CH3:30])[CH2:18][CH2:19][O:20][C:21]1[CH:26]=[CH:25][C:24]([NH2:27])=[C:23]([O:28][CH3:29])[CH:22]=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:27][C:24]2[CH:25]=[CH:26][C:21]([O:20][CH2:19][CH2:18][N:17]([CH3:16])[CH3:30])=[CH:22][C:23]=2[O:28][CH3:29])[CH:11]=[CH:12][CH:13]=1)[C:6]([O:8][CH3:9])=[O:7]

Participants

8

Reactant 4

HCID 10796Cesium carbonateHCID 634876Binap, (A+-)-HCID 2326127Dimethyl 3-iodophthalateHCID 58307228927672-74-0

Product 1

HCID 58307296HCID 58307296, compoundYield 60%

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 1140TolueneSolventHCID 6344DichloromethaneSolvent

Procedure

A mixture of 3-iodophthalic acid dimethyl ester (1.0 g, 3.1 mmol), 4-(2-dimethylaminoethoxy)-2-methoxyphenylamine (0.65 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 24 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, and the residue was chromatographed using a methylene chloride-methanol gradient, eluting 0.75 g of the product at 96:4 methylene chloride-methanol, in 60% yield: 1H NMR (CDCl3) δ 2.35 (s, 6H), 2.73 (t, J=5.7 Hz, 2H), 3.80 (s, 3H), 3.87 (s, 3H), 3.88 (s, 3H), 4.06 (t, J=5.7 Hz, 2H), 6.46 (dd, J=8.6 Hz, J=2.7 Hz, 1H), 6.59 (d, J=2.7 Hz, 1H), 6.98 (dd, J=7.3 Hz, J=1.0 Hz, 1H), 7.08-7.16 (m, 2H), 7.22 (t, J=7.5 Hz, 1H), 7.93 (br, 1H).

Workup

  1. temperatureto reflux under nitrogen for 24 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
  6. customthe residue was chromatographed
  7. washeluting 0.75 g of the product at 96:4 methylene chloride-methanol

Sources & evidence

ORD record
ord-00ed058aa7fc42bfbb9c382a8de77668
Source dataset
uspto-grants-2013_07
Patent number
US08481568B2

Reaction notes

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