A Microwave-Enhanced, Lewis Acid-Catalyzed Synthesis of 1,3-Dioxolanes and Oxazolines from Epoxides
作者:Fides Benfatti、Giuliana Cardillo、Luca Gentilucci、Alessandra Tolomelli、Magda Monari、Fabio Piccinelli
DOI:10.1002/adsc.200600516
日期:2007.5.7
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。