A Convergent Strategy for the Synthesis of Polycyclic Ethers by Using Oxiranyl Anions
作者:Takeo Sakai、Ai Sugimoto、Yuji Mori
DOI:10.1021/ol202467z
日期:2011.11.4
A new [X+2+Y]-type for the convergent synthesis of polycyclic ethers based on an oxiranyl anion strategy was developed. The sequence involves nucleophilic substitution of a triflate with an oxiranyl anion followed by 6-endo cyclization, ring expansion, and reductive etherification. The protocol features a flexible approach toward trans-fused polycyclic arrays consisting of six- and seven-membered ether
开发了一种新的[X + 2 + Y]型,用于基于环氧乙烷基阴离子策略的多环醚聚合合成。该序列包括用环氧乙烷阴离子随后6-三氟甲磺酸酯的亲核取代内环化,环扩展,和还原醚化。该协议采用灵活的方法来处理由相同原料的六元和七元醚环组成的反式多环阵列。