1,1'-Carbonyldiimidazole → HCID 22896534, compound

HRID 433909Notes

Reaction equation

HRID 433909 reaction equation
C(N1C=CN=C1)(N1C=CN=C1)=O.[CH3:13][O:14][C:15]1[CH:23]=[C:22]([N:24]2[CH2:29][CH2:28][O:27][CH2:26][CH2:25]2)[CH:21]=[CH:20][C:16]=1[C:17]([OH:19])=O.[NH2:30][C@H:31]1[CH2:36][C:35]2[C:37]([N:41]3[CH2:46][CH2:45][N:44]([CH3:47])[CH2:43][CH2:42]3)=[CH:38][CH:39]=[CH:40][C:34]=2[O:33][CH2:32]1>CN(C)C=O>[CH3:47][N:44]1[CH2:45][CH2:46][N:41]([C:37]2[C:35]3[CH2:36][C@H:31]([NH:30][C:17](=[O:19])[C:16]4[CH:20]=[CH:21][C:22]([N:24]5[CH2:29][CH2:28][O:27][CH2:26][CH2:25]5)=[CH:23][C:15]=4[O:14][CH3:13])[CH2:32][O:33][C:34]=3[CH:40]=[CH:39][CH:38]=2)[CH2:42][CH2:43]1

Participants

5

Reactant 3

HCID 682631,1'-CarbonyldiimidazoleHCID 11139461(S)-3-amino-5-(4-methylpiperazin-1-yl)-1,4-dihydro-2H-1-benzopyranHCID 22064029HCID 22064029, compound

Product 1

HCID 22896534HCID 22896534, compoundYield 32.7%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Procedure

A stirred solution of 1,1′-carbonyldiimidazole (222 mg, 1.37 mmol) and 2-methoxy-4-morpholinobenzoic acid (176 mg, 0.740 mmol) in anhydrous N,N-dimethylformamide (5 mL) was heated at 75° C. for 2 h, and was then allowed to cool. A solution of (S)-3-amino-5-(4-methylpiperazin-1-yl)-3,4-dihydro-2H-1-benzopyran (183 mg, 0.740 mmol) in anhydrous N,N-dimethylformamide (4 mL) was added. The reaction mixture was stirred at room temperature for 5 days. The solvent was removed in vacuo, and the residue was partitioned between ethyl acetate (50 mL) and a 2 M NH3 solution (15 mL). The organic layer was dried (MgSO4), and the solvent was removed in vacuo. The residue was purified by column chromatography on silica (eluent: chloroform/ethanol, 93:7+0.5% conc. NH3) affording 113 mg (30% yield) of the title compound as an uncolored foam: [α]21D−141° (c 0.5, chloroform); EIMS (70 eV)) m/z (relative intensity) 466 (20, M+).

Workup

  1. temperatureto cool
  2. customThe solvent was removed in vacuo
  3. customthe residue was partitioned between ethyl acetate (50 mL)
  4. dry with materialThe organic layer was dried (MgSO4)
  5. customthe solvent was removed in vacuo
  6. customThe residue was purified by column chromatography on silica (eluent: chloroform/ethanol, 93:7+0.5% conc. NH3)

Sources & evidence

ORD record
ord-c7b5f26d49264ae686d2b5e3b4626699
Source dataset
uspto-grants-2003_12
Patent number
US06670359B2

Reaction notes

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