تفاعل #7690

معادلة التفاعل

hydrogen chloride

5-(2-(4-(1,2-benzisothiazol-3-yl)-1-piperazinyl)ethyl)-6-chloro-1,3-dihydro-2H-indol-2-one

ethanol

→

5-[2-[4-(1,2-benzisothiazol-3-yl)-1-piperazinyl]ethyl]-6-chloro-1, 3-dihydro-2H-indol-2-one hydrochloride

المذيبات

isopropanol

ظروف التفاعل

المعالجة

1. 1
   أخرىTo a flask equipped with magnetic stirrer
2. 2
   workup.STIRRINGthe mixture was stirred for about 24 h
3. 3
   ترشيحThe product was collected by filtration on a Buchner funnel
4. 4
   غسيلThe filter cake is rinsed with 3×10 mL of ethanol at 20–25° C.
5. 5
   أخرىtransferred to a drying oven
6. 6
   أخرىdried in vacuo at 65–70° C. for about 24 h.

الإجراء التجريبي

To a flask equipped with magnetic stirrer, thermometer and nitrogen inlet was added 5-(2-(4-(1,2-benzisothiazol-3-yl)-1-piperazinyl)ethyl)-6-chloro-1,3-dihydro-2H-indol-2-one free base (5.0 g) and ethanol (100 mL) and the suspension was stirred at 20–25° C. under nitrogen. A 20.5% anhydrous solution of hydrogen chloride in isopropanol (6.45 g) was added and the mixture was stirred for about 24 h. The product was collected by filtration on a Buchner funnel. The filter cake is rinsed with 3×10 mL of ethanol at 20–25° C. and transferred to a drying oven and dried in vacuo at 65–70° C. for about 24 h., then at 70–75° C. for another 24 h. This afforded 5.27 g of anhydrous ziprasidone hydrochloride. The material contained a small amount of residual ethanol, 0.7% determined by NMR. The IR and powder X-ray diffractogram matched that of the desired anhydrous product as depicted in U.S. Pat. No. 5,312,925.

المصدر