反应详情

4-Hydroxy-2-oxa-8-aza-spiro[4.5]decane-8-carboxylic acid 1,1-dimethylethyl ester (Description 7; 0.86 g, 3.3 mmol) was stirred overnight in 2M ethereal hydrogen chloride. The mixture was filtered and the solid dried to give the title compound (0.5 g, 77%).

1. filtrationThe mixture was filtered
2. customthe solid dried