反应详情

4-Benzoyloxy-3-(2-pyridylazo)-1-naphthalenesulfonic acid (70 g) was added to thionyl chloride (300 ml). Dimethylformamide (30 ml) was added in portions while the reaction mixture was being stirred. After 1 hour the starting material was all in solution. The reaction mixture was poured into a large quantity of ice after a further 4 hours' stirring. The product was filtered off and dissolved in chloroform. The chloroform layer was shaken with water to destroy any remaining thionyl chloride and dried over magnesium sulfate.

1. additionThe reaction mixture was poured into a large quantity of ice after a further 4 hours'
2. stirringstirring
3. filtrationThe product was filtered off
4. dissolutiondissolved in chloroform
5. stirringThe chloroform layer was shaken with water
6. customto destroy any remaining thionyl chloride
7. dry with materialdried over magnesium sulfate