تفاعل #3973
ord-6a823073ab7c4f51901f88aec89eb947
معادلة التفاعل
الكواشف
ظروف التفاعل
الظروف التفصيلية
See reaction.notes.procedure_details.
المعالجة
- 1أخرىthe product precipitated
- 2ترشيحis filtered off
الإجراء التجريبي
A quantity of 2.3 gm of 8-(2-methoxy-4-carboxy-phenyl)-1H,-3H-purin-2,6-dione are refluxed for one hour in 50 ml of thionyl chloride with the addition of 1 drop of dimethylformamide. The excess thionyl chloride is drawn off, and the residue is stirred for 16 hours at ambient temperature with a solution of ammonia in dimethylformamide. The dimethylformamide is drawn off, the remainder is mixed with water and acidified with glacial acetic acid, and the product precipitated is filtered off.