and highly regio- and stereoselective transformation of non-conventional β-lactam-containing epoxides into the corresponding cyclic 1,3-dioxolanes and oxazolines is herein reported, using microwave irradiation as an efficient source of energy, in the presence of stoichiometric or catalytic amounts of Lewis acids, without an additional solvent. These cyclic compounds are the protected forms of diols
本文报道了在
化学计量或
化学计量存在下使用微波辐射作为有效的能源,将非常规的含β-内酰胺的
环氧化物快速且高度区域选择性和立体选择性地转化为相应的环状1,3-二
氧戊环和
恶唑啉。催化量的
路易斯酸,无需其他溶剂。这些环状化合物是二醇和
氨基醇的保护形式。