InBr3 is demonstrated to be an efficient catalyst for reactions of fully acetated aldoses with aryl mercaptans or selenophenol at room temperature, rapidly furnishing the corresponding thioglycosides or selenoglycosides with exclusively 1,2-trans-stereoselectivity. This bromide is an air- and moisture-stable Lewis acid and therefore the reactions can be performed in air atmosphere making the procedure simple to perform.
InBr3被证明是一种高效的催化剂,可在室温下与芳基巯基或
硒酚完全乙酰化的醛糖反应中迅速生成相应的巯基糖或
硒基糖,且具有纯粹的1,2-反式选择性。这种
溴化物是一种空气和湿气稳定的
路易斯酸,因此反应可以在空气氛围中进行,使得操作程序简单。