作者:Martin E. Maier、Michael Bugl
DOI:10.1055/s-1998-1943
日期:1998.12
Starting from the cyclic ketones 1 a - d, the dienes 3 a - e were prepared. The ring closing metathesis reaction of these dienes using the Grubbs catalyst 5 provided the corresponding spiro ethers 4 a - e in good yield. Force field calculations indicate that the conformer with the oxygen in axial position is favored.
从环酮 1 a - d 开始,制备二烯 3 a - e。使用格拉布斯催化剂 5 对这些二烯进行闭环偏析反应,可以得到相应的螺醚 4 a - e,收率很高。力场计算表明,氧处于轴向位置的构象更受青睐。