Potassium Carbonate → 9-bromo-2-(3-hydroxypropyloxy)-5-(3-pyridylmethyl)-4H-pyrido [3,2,1-jk]carbazole-4-one

HRID 850784Notes

Reaction equation

HRID 850784 reaction equation
[Br:1][C:2]1[CH:14]=[CH:13][C:12]2[C:11]3[C:6]4=[C:7]([C:16](=[O:26])[C:17]([CH2:19][C:20]5[CH:21]=[N:22][CH:23]=[CH:24][CH:25]=5)=[CH:18][N:5]4[C:4]=2[CH:3]=1)[CH:8]=[C:9]([OH:15])[CH:10]=3.C(=O)([O-])[O-].[K+].[K+].Br[CH2:34][CH2:35][CH2:36][OH:37]>CS(C)=O>[Br:1][C:2]1[CH:14]=[CH:13][C:12]2[C:11]3[C:6]4=[C:7]([C:16](=[O:26])[C:17]([CH2:19][C:20]5[CH:21]=[N:22][CH:23]=[CH:24][CH:25]=5)=[CH:18][N:5]4[C:4]=2[CH:3]=1)[CH:8]=[C:9]([O:15][CH2:34][CH2:35][CH2:36][OH:37])[CH:10]=3

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 123083-Bromo-1-propanolHCID 212528709-bromo-2-hydroxy-5-(3-pyridylmethyl)-4H-pyrido [3,2,1-jk]carbazole-4-one

Product 1

HCID 98724899-bromo-2-(3-hydroxypropyloxy)-5-(3-pyridylmethyl)-4H-pyrido [3,2,1-jk]carbazole-4-oneYield 72%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

9-bromo-2-hydroxy-5-(3-pyridylmethyl)-4H-pyrido[3,2,1-jk]carbazole-4-one (400 mg) produced in Example 102 was suspended in dimethyl sulfoxide (40 ml). After adding potassium carbonate (540 mg), the mixture was stirred at room temperature for 30 minutes, and 3-bromo-1-propanol (0.3 ml) was added. After stirring at room temperature for 12 hours, the reaction mixture was poured into ice water (100 ml) and the crystals precipitated were recovered by filtration. The thus obtained crude crystals were washed with water, ethanol and ether in succession and recovered by filtration to obtain the title compound (177 mg, 72%).

Workup

  1. stirringAfter stirring at room temperature for 12 hours
  2. customthe crystals precipitated
  3. filtrationwere recovered by filtration
  4. customThe thus obtained crude crystals
  5. washwere washed with water, ethanol and ether in succession
  6. filtrationrecovered by filtration

Sources & evidence

ORD record
ord-a6f64fe54011493e8741d316adc586aa
Source dataset
uspto-grants-2000_01
Patent number
US06018046

Reaction notes

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