Potassium Carbonate → (S)-2-(3-(((3,4-Dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)(methyl)amino)propyl)isoindoline-1,3-dione

HRID 445907Notes

Reaction equation

HRID 445907 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:8](=[CH:9][C:10]=1[O:11][CH3:12])[C@@H:7]([CH2:13][NH:14][CH3:15])[CH2:6]2.Br[CH2:17][CH2:18][CH2:19][N:20]1[C:28](=[O:29])[C:27]2[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=2)[C:21]1=[O:30].C(=O)([O-])[O-].[K+].[K+]>CC(C)=O>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:8](=[CH:9][C:10]=1[O:11][CH3:12])[C@@H:7]([CH2:13][N:14]([CH3:15])[CH2:17][CH2:18][CH2:19][N:20]1[C:28](=[O:29])[C:27]3[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=3)[C:21]1=[O:30])[CH2:6]2

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 21611N-3-BromopropylphthalimideHCID 11499437(S)-1-(3,4-Dimethoxybicyclo(4.2.0)octa-1,3,5-trien-7-yl)-N-methylmethanamine

Product 1

HCID 68163162(S)-2-(3-(((3,4-Dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)(methyl)amino)propyl)isoindoline-1,3-dioneYield 97%

Reagents, catalysts & solvents 1

HCID 180AcetoneSolvent

Procedure

5.3 g (25.5 mmoles) of 1-[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]-N-methyl-methanamine and 6.8 g (25.5 mmoles) of 2-(3-bromopropyl)-1H-isoindole-1,3(2H)-dione are dissolved in 230 mL of acetone. 13 g (95 mmoles, 3.7 eq.) of potassium carbonate are added to the resulting solution. The mixture is then heated at reflux for 24 hours. After returning to ambient temperature, the potassium carbonate is filtered off and the filtrate is evaporated to dryness. The residue is taken up in water and extracted with dichloromethane. The organic phase is dried over MgSO4, filtered and evaporated to dryness. 9.7 g of expected product are obtained in the form of a pale yellow oil.

Workup

  1. temperatureThe mixture is then heated
  2. temperatureat reflux for 24 hours
  3. customAfter returning to ambient temperature
  4. filtrationthe potassium carbonate is filtered off
  5. customthe filtrate is evaporated to dryness
  6. extractionextracted with dichloromethane
  7. dry with materialThe organic phase is dried over MgSO4
  8. filtrationfiltered
  9. customevaporated to dryness

Sources & evidence

ORD record
ord-161b53f531d3469ba20d5b7b1a8fc47e
Source dataset
uspto-grants-2013_07
Patent number
US08476426B2

Reaction notes

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