反应详情

A solution of nicotinic acid (0.50 g, 4.0 mmol) and POCl3 (5 mL) was heated at reflux for 1.5 h and concentrated. The product obtained was directly used in the next reaction.

1. temperatureat reflux for 1.5 h
2. concentrationconcentrated
3. customThe product obtained
4. customwas directly used in the next reaction