Triethylamine → HCID 23614673, compound

HRID 641165Notes

Reaction equation

HRID 641165 reaction equation
[OH:1][C:2]1[CH:3]=[C:4]([CH:10]2[CH2:14][NH:13][C:12](=[O:15])[CH2:11]2)[CH:5]=[CH:6][C:7]=1[O:8][CH3:9].[Cl:16][C:17]1[CH:22]=[CH:21][C:20](B(O)O)=[CH:19][CH:18]=1.C(N(CC)CC)C>C([O-])(=O)C.[Cu+2].C([O-])(=O)C.ClCCl>[Cl:16][C:17]1[CH:22]=[CH:21][C:20]([O:1][C:2]2[CH:3]=[C:4]([CH:10]3[CH2:14][NH:13][C:12](=[O:15])[CH2:11]3)[CH:5]=[CH:6][C:7]=2[O:8][CH3:9])=[CH:19][CH:18]=1

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 742994-Chlorophenylboronic acidHCID 10130484HCID 10130484, compound

Product 1

HCID 23614673HCID 23614673, compoundYield 27.3%

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 6344DichloromethaneSolvent

Procedure

A mixture of 4-(3-hydroxy-4-methoxyphenyl)-2-pyrrolidone (63 mg, 0.3 mmol), 4-chlorophenylboronic acid (61 mg, 0.45 mmol), copper (II) acetate (54 mg, 0.3 mmol), triethylamine (152 mg, 1.5 mmol), dichloromethane (3 ml) and small amount of molecular sieves is allowed to stir at ambient temperature. After 18 hours, the mixture is filtered over celite and the filtrate is concentrated under vacuum. The resulting residue is dissolved in 30 ml of ethyl acetate and washed successively with saturated aqueous sodium bicarbonate solution and brine. Purification by flash column chromatography (ethyl acetate/hexane 1:1 to methanol/dichloromethane 3:97) gives 26 mg (27%) of 4-(3-(4-chlorophenyloxy)-4-methoxyphenyl)-2-pyrrolidone: 1H NMR (300 MHz, CDCl3) δ 7.24 (d, J=9.2 Hz, 2H), 7.03 (d, J=8.4 Hz, 1H), 6.95 (d, J=8.4 Hz, 1H), 6.87 (s, 1H), 6.83 (d, J=9.2 Hz, 2H), 5.83 (b, 1H), 3.80 (s, 3H), 3.72 (t, J=8.4 Hz, 1H), 3.65-3.62 (m, 1H), 3.34 (t, J=8.4 Hz, 1H), 2.68 (dd, J=16.8, 8.8 Hz, 1H), 2.41 (dd, J=16.8, 9.2 Hz, 1H).

Workup

  1. filtrationthe mixture is filtered over celite
  2. concentrationthe filtrate is concentrated under vacuum
  3. dissolutionThe resulting residue is dissolved in 30 ml of ethyl acetate
  4. washwashed successively with saturated aqueous sodium bicarbonate solution and brine
  5. customPurification by flash column chromatography (ethyl acetate/hexane 1:1 to methanol/dichloromethane 3:97)

Sources & evidence

ORD record
ord-0124ac2f97a34d5cb3bdfad944b23cd9
Source dataset
uspto-grants-2010_04
Patent number
US07696198B2

Reaction notes

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