A variety of carbonyl compounds can be easily and rapidly converted to the corresponding 1,3-oxathiolanes in the presence of a catalytic amount of scandium(III) triflate [Sc(OTf)3] in CH2Cl2. After completion of the reaction, the catalyst can straightforwardly be recovered using standard methods. Moreover, by employing this protocol, chemoselective oxathioacetalization of aldehydes in the presence of ketones can be achieved.
多种羰基化合物可以在催化剂
三氟甲磺酸钪[Sc(OTf)3]存在下,迅速且轻易地转化为相应的1,3-氧杂
硫烷,溶剂为
二氯甲烷(
CH2Cl2)。在反应完成后,可以使用标准方法轻松回收催化剂。此外,通过采用该方法,可以在酮的存在下实现醛的
化学选择性氧杂
硫缩合反应。