A novel methodology for the diastereoselective synthesis of seven- and eight-membered oxabicycles bearing dimethylidene via Prins-type cyclization was developed. The reaction takes place in the presence of TMSOTf in diethyl ether at -78 °C.
本研究开发了一种通过 Prins 型环化反应非对映选择性合成含二亚甲基的七元和八元草环的新方法。反应在 TMSOTf 存在下于 -78 °C 的二
乙醚中进行。