Sodium hydride/hexamethylphosphoric triamide: a new and efficient reagent towards the synthesis of protected 1,2- and 5,6-enopyranosides
作者:Khalid Mohammed Khan、Shahnaz Perveen、Syed Tasadaque Ali Shah、Mohammed Saleh Shekhani、Wolfgang Voelter
DOI:10.1039/b010196f
日期:——
A new method for the elimination of hydrogen halides and p-toluenesulfonic acid from sugar moieties using sodium hydride (NaH) in hexamethylphosphoric triamide (HMPA) at room temperature is reported. NaH/HMPA has several advantages compared to NaH/DMF: elimination products are produced in high yields even from sterically hindered starting materials, and not only from halides, but also tosylates.