تفاعل #1364081

معادلة التفاعل

Potassium cyanate

18-crown-6

1-(2-chlorobenzyl)-6-chloromethyl-2-methylbenzimidazole

→

1-(2-chlorobenzyl)-2-methylbenzimidazole-6-acetonitrile

المردود 43.0%

المذيبات

dimethylsulfoxide

ظروف التفاعل

المعالجة

1. 1
   استخلاصThe reaction mixture was extracted with the addition of chloroform, water
2. 2
   تركيزThe organic layer was concentrated
3. 3
   أخرىthe residue was purified through silica-gel column chromatography (eluent
4. 4
   workup.ADDITIONa mixture of chloroform and methanol at a ratio of 20:1)

الإجراء التجريبي

Potassium cyanate (0.450 g) and 0.450 g of 18-crown-6 were added to a solution of 1.20 g of 1-(2-chlorobenzyl)-6-chloromethyl-2-methylbenzimidazole in 10 ml of dimethylsulfoxide, and the mixture was stirred at room temperature for 18 hours. The reaction mixture was extracted with the addition of chloroform, water and a small amount of aqueous ammonia. The organic layer was concentrated, and the residue was purified through silica-gel column chromatography (eluent: a mixture of chloroform and methanol at a ratio of 20:1) to give 0.500 g of 1-(2-chlorobenzyl)-2-methylbenzimidazole-6-acetonitrile.

المصدر