反应详情

10 g of the product obtained in Step 1 are treated at room temperature with 42 ml of 1N hydrochloric acid dissolved in 170 ml of tetrahydrofuran. After 1 hour 30 minutes' contact, the solvent is concentrated and the residue is poured into 170 ml of water. 6.9 g of a solid corresponding to the expected product are then isolated.

1. concentrationthe solvent is concentrated
2. additionthe residue is poured into 170 ml of water