Citric Acid → HCID 67210606, compound

HRID 452136Notes

Reaction equation

HRID 452136 reaction equation
[CH2:1]([C:4]1[N:8]([CH2:9][C:10]2[CH:28]=[CH:27][C:13]3/[C:14](=[CH:23]/[C:24](O)=[O:25])/[C:15]4[CH:22]=[CH:21][CH:20]=[CH:19][C:16]=4[CH2:17][CH2:18][C:12]=3[CH:11]=2)[C:7]2[CH:29]=[CH:30][CH:31]=[CH:32][C:6]=2[N:5]=1)[CH2:2][CH3:3].[CH3:33][S:34]([NH2:37])(=[O:36])=[O:35].C1CCN2C(=NCCC2)CC1.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>CN(C=O)C.O>[CH2:1]([C:4]1[N:8]([CH2:9][C:10]2[CH:28]=[CH:27][C:13]3/[C:14](=[CH:23]/[C:24]([NH:37][S:34]([CH3:33])(=[O:36])=[O:35])=[O:25])/[C:15]4[CH:22]=[CH:21][CH:20]=[CH:19][C:16]=4[CH2:17][CH2:18][C:12]=3[CH:11]=2)[C:7]2[CH:29]=[CH:30][CH:31]=[CH:32][C:6]=2[N:5]=1)[CH2:2][CH3:3]

Participants

7

Reactant 4

HCID 311Citric AcidHCID 72879MethanesulfonamideHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 67211673HCID 67211673, compound

Product 1

HCID 67210606HCID 67210606, compoundYield 41.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

(E)-[2-(2-Propylbenzimidazol-1-yl)methyl-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene]acetic acid (60 mg, 0.14 mmol) obtained in Example 2 was dissolved in DMF (0.6 mL), N,N′-carbonyldiimidazole (92 mg, 0.57 mmol) was added, and the mixture was stirred at room temperature for 1 hr. Methanesulfonamide (68 mg, 0.71 mmol) and DBU (106 μL, 0.71 mmol) were added to the reaction mixture, and the mixture was stirred at 80° C. for 2 hr. Water and 5% aqueous citric acid solution were added to the mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. Ethyl acetate was added to the residue, and the mixture was filtered to give the title compound (compound 12) (29 mg, 41%).

Workup

  1. stirringthe mixture was stirred at 80° C. for 2 hr
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. additionEthyl acetate was added to the residue
  7. filtrationthe mixture was filtered

Sources & evidence

ORD record
ord-3617633d8d81494285097fb367ce9849
Source dataset
uspto-grants-2013_07
Patent number
US08486980B2

Reaction notes

Loading…