Potassium Carbonate → Ziprasidone

HRID 13567

Reaction equation

HRID 13567 reaction equation
[N:1]1([C:7]2[C:11]3[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=3[S:9][N:8]=2)[CH2:6][CH2:5][NH:4][CH2:3][CH2:2]1.[Cl:16][C:17]1[CH:25]=[C:24]2[C:20]([CH2:21][C:22](=[O:26])[NH:23]2)=[CH:19][C:18]=1[CH2:27][CH2:28]Cl.C(=O)([O-])[O-].[K+].[K+].S1(CCCC1)(=O)=O>[I-].[K+].O>[S:9]1[C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=2[C:7]([N:1]2[CH2:6][CH2:5][N:4]([CH2:28][CH2:27][C:18]3[CH:19]=[C:20]4[C:24](=[CH:25][C:17]=3[Cl:16])[NH:23][C:22](=[O:26])[CH2:21]4)[CH2:3][CH2:2]2)=[N:8]1

Participants

7

Reactant 4

HCID 11430Potassium CarbonateHCID 31347SulfolaneHCID 27721443-(1-Piperazinyl)-1,2-benzisothiazoleHCID 106094745-(2-Chloroethyl)-6-chlorooxindole

Product 1

HCID 60854ZiprasidoneYield 74.8%

Reagents, catalysts & solvents 2

HCID 4875Potassium IodideCatalystHCID 962WaterSolvent

Procedure

In glass-lined reactor placed 21.1 Kg (96.34 mole) of 3-piperazinylbenzo[d]isothiazole; 31 kg (134.7 moles) of 6-chloro-5-(2-chloroethyl)indolin-2-one; 1.1 kg of potassium iodide; 20.0 kg (111.92 mole) of potassium carbonate and 63.2 lit of sulfolane. The contents of the flask were initially heated to 75° C. to 80° C. for 2 hrs. Then temperature was raised to 95° C. to 100° C. and stirred till completion of the reaction. After completion of the reaction 210 lit of DM water was added to the reaction mixture and stirred. The product was filtered off and washed with water and dried to obtain 29.75 kg of 5-(2-(4-(1,2-benzisothiazol-3-yl)-1-piperazinyl)ethyl)-6-chloro-1,3-dihydro-2H-indol-2-one (Ziprasidone).

Workup

  1. customIn glass-lined reactor placed
  2. temperatureThe contents of the flask were initially heated to 75° C. to 80° C. for 2 hrs
  3. temperatureThen temperature was raised to 95° C. to 100° C.
  4. additionwas added to the reaction mixture
  5. stirringstirred
  6. filtrationThe product was filtered off
  7. washwashed with water
  8. customdried

Sources & evidence

ORD record
ord-1f25ff321e514b58b4c5fca27a5d1686
Source dataset
uspto-grants-2010_06
Patent number
US07728136B2

Linked notes

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