Cesium carbonate → HCID 57586581, compound

HRID 420358Notes

Reaction equation

HRID 420358 reaction equation
[CH2:1]([O:3][C:4](=[O:29])[CH2:5][CH2:6][CH2:7][O:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][SH:21])[C:10]=1[CH2:22][CH2:23][C:24]([O:26][CH2:27][CH3:28])=[O:25])[CH3:2].[Br:30][C:31]1[CH:32]=[C:33]([N+]([O-])=O)[CH:34]=[C:35]([Br:37])[CH:36]=1.C([O-])([O-])=O.[Cs+].[Cs+]>CS(C)=O.CCOC(C)=O>[CH2:1]([O:3][C:4](=[O:29])[CH2:5][CH2:6][CH2:7][O:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][S:21][C:33]2[CH:32]=[C:31]([Br:30])[CH:36]=[C:35]([Br:37])[CH:34]=2)[C:10]=1[CH2:22][CH2:23][C:24]([O:26][CH2:27][CH3:28])=[O:25])[CH3:2]

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 2387111,3-dibromo-5-nitrobenzeneHCID 57586501HCID 57586501, compound

Product 1

HCID 57586581HCID 57586581, compoundYield 72%

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
90 °C

Procedure

To a solution of 4-[2-(2-ethoxycarbonyl-ethyl)-3-(6-mercapto-hexyl)-phenoxy]-butyric acid ethyl ester (162 mg, 0.388 mmol) in DMSO (5 mL), 3,5-dibromonitrobenzene (129 mg, 0.46 mmol) and Cs2CO3 (150 mg, 0.46 mmol) were added and stirred at 90° C. for 3 hrs. At this time, the reaction mixture was diluted with EtOAc (200 mL) and washed with water (100 mL). The EtOAc layer was washed), brine and then dried over Na2SO4. This mixture was filtered and the filtrate was concentrated. The solvent was removed in vacuo to afford an oil. This oil was purified using FCC (15% EtOAc/Hex) to provide a colorless oil (180 mg, yield 72%). 1H NMR (CDCl3): □ 7.42 (s, 1H), 7.32 (s, 2H), 7.09 (dd, 1H), 6.75 (d, 1H), 6.69 (d, 1H), 4.14 (m, 4H), 3.99 (t, 2H), 2.98-2.89 (m, 4H), 2.64-2.46 (m, 6H), 2.13 (m, 2H), 1.67-1.39 (m, 8H), 1.27 (m, 6H).

Workup

  1. washwashed with water (100 mL)
  2. washThe EtOAc layer was washed), brine
  3. dry with materialdried over Na2SO4
  4. filtrationThis mixture was filtered
  5. concentrationthe filtrate was concentrated
  6. customThe solvent was removed in vacuo
  7. customto afford an oil
  8. customThis oil was purified

Sources & evidence

ORD record
ord-39450b04c3fd4f94bb56e2657a09fc82
Source dataset
uspto-grants-2012_01
Patent number
US08093385B2

Reaction notes

Loading…