反应详情

To a solution of 4.13 g of 3-(2-amino-3-hydroxypropoxy)-5-chloro-1,2-benzoisoxazole in 82 ml of ethyl acetate is added 13.6 ml of a dioxane solution (2.2N) of hydrogen chloride, and the crystals precipitated are collected by filtration to obtain 4.52 g of colorless, crystalline 3-(2-amino-3-hydroxypropoxy)-5-chloro-1,2-benzoisoxazole hydrochloride having a melting point of 216°-217° C.

1. customthe crystals precipitated
2. filtrationare collected by filtration