β-Tosylethylazide: a useful synthon for preparation of N-protected 1,2,3-triazoles via click chemistry
作者:Amy H. Yap、Steven M. Weinreb
DOI:10.1016/j.tetlet.2006.03.020
日期:2006.5
β-Tosylethylazide (TSE-N3), which can be prepared in one step from p-tolyl vinyl sulfone and sodium azide/H2SO4, undergoes metal-catalyzed 1,3-dipolar cycloadditions with alkynes to produce TSE-protected 1,2,3-triazoles. The protecting group can be removed using potassium tert-butoxide in THF at −78 to 0 °C.
可以由对甲苯基乙烯基砜和叠氮化钠/ H 2 SO 4一步制得的β-甲苯磺酰基乙叠氮化物(TSE-N 3)与炔烃进行金属催化的1,3-偶极环加成反应,生成TSE保护的1 ,2,3-三唑。可以在-78至0°C的条件下,使用叔丁醇钾的四氢呋喃溶液除去保护基。