反应详情

A stirred solution of product from Step A (17 g) in phosphorus oxychloride (160 ml) was heated at reflux for 1 hour. Two-thirds of the phosphorus oxychloride was distilled from the reaction mixture and the residue poured into ice water to give 12.1 g of title compound which was dried and used in Step C without further purification or characterization.

1. temperatureat reflux for 1 hour
2. distillationTwo-thirds of the phosphorus oxychloride was distilled from the reaction mixture
3. additionthe residue poured into ice water