A wide range of O-isopropylidene derivatives can be prepared from the sugars and their derivatives on reaction with acetone at room temperature by employing 2 mol% of tetrabutylammonium tribromide (TBATB) as a catalyst. Good yields, low catalyst loading, mild reaction conditions, and a non-aqueous workup procedure are some major advantages of this protocol.
通过使用2mol%的
四丁基三溴化铵(TBATB)作为催化剂,可以在室温下由糖和它们的衍
生物与
丙酮反应来制备各种各样的O-异亚丙基衍
生物。良好的收率,较低的催化剂载量,温和的反应条件和非
水后处理程序是该方案的一些主要优点。