Succinimide → 1-(2-(4-(5,7-Dimethoxy-4-oxo-3,4-dihydroquinazolin-2-yl)-2,6-dimethylphenoxy)ethyl)pyrrolidine-2,5-dione

HRID 591797Notes

Reaction equation

HRID 591797 reaction equation
O[CH2:2][CH2:3][O:4][C:5]1[C:10]([CH3:11])=[CH:9][C:8]([C:12]2[NH:21][C:20](=[O:22])[C:19]3[C:14](=[CH:15][C:16]([O:25][CH3:26])=[CH:17][C:18]=3[O:23][CH3:24])[N:13]=2)=[CH:7][C:6]=1[CH3:27].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[NH:47]1[C:51](=[O:52])[CH2:50][CH2:49][C:48]1=[O:53].C(N(CC)C(C)C)(C)C.CCOC(/N=N/C(OCC)=O)=O>C1COCC1.C(OCC)(=O)C>[CH3:24][O:23][C:18]1[CH:17]=[C:16]([O:25][CH3:26])[CH:15]=[C:14]2[C:19]=1[C:20](=[O:22])[NH:21][C:12]([C:8]1[CH:9]=[C:10]([CH3:11])[C:5]([O:4][CH2:3][CH2:2][N:47]3[C:51](=[O:52])[CH2:50][CH2:49][C:48]3=[O:53])=[C:6]([CH3:27])[CH:7]=1)=[N:13]2

Participants

8

Reactant 5

HCID 11439SuccinimideHCID 11776TriphenylphosphineHCID 81531DiisopropylethylamineHCID 5462977Diethyl azodicarboxylateHCID 135564749Apabetalone

Product 1

HCID 1359390621-(2-(4-(5,7-Dimethoxy-4-oxo-3,4-dihydroquinazolin-2-yl)-2,6-dimethylphenoxy)ethyl)pyrrolidine-2,5-dione

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 2-[4-(2-hydroxy-ethoxy)-3,5-dimethyl-phenyl]-5,7-dimethoxy-3H-quinazolin-4-one (0.50 g, 1.35 mmol) in anhydrous THF (20 mL) were added triphenyl phosphine (0.53 g, 2.02 mmol), pyrrolidine-2,5-dione (0.20 g, 2.02 mmol), and N,N-diisopropylethyl amine (0.44 g, 3.38 mmol). To this stirred solution was added diethylazodicarboxylate (0.35 g, 2.02 mmol). The reaction mixture was stirred at room temperature for 8 hours under nitrogen. Ethyl acetate (400 mL) was added. The organic phase was separated, washed with water (100 mL), then brine (100 mL), and dried over anhydrous Na2SO4. The solvent was removed under reduced pressure. The crude material was purified by the Simpliflash system (4:96 methanol:CH2Cl2 as eluent) to give the title compound as a white solid. Yield: 0.3 g. (49%). 1H NMR (400 MHz, CDCl3): δ 9.30 (br s, 1H), 7.66 (s, 2H), 6.82 (d, J=2.4 Hz, 1H), 6.46 (d, J=1.6 Hz, 1H), 3.99 (s, 3H), 3.97 (s, 3H), 3.92 (s, 4H), 2.78 (s, 4H), 2.31 (s, 6H). MS (ES) m/z: 452.51 (M+1) (100%).

Workup

  1. customThe organic phase was separated
  2. washwashed with water (100 mL)
  3. dry with materialbrine (100 mL), and dried over anhydrous Na2SO4
  4. customThe solvent was removed under reduced pressure
  5. customThe crude material was purified by the Simpliflash system (4:96 methanol:CH2Cl2 as eluent)

Sources & evidence

ORD record
ord-ea53656e78b94a3cbdcb3913da89712e
Source dataset
uspto-grants-2016_01
Patent number
US09238640B2

Reaction notes

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