The reactions of acetylenic ether 1 with higher order cuprates 2a, 2b and 2c were studied chemically and spectroscopically. Conditions were developed to efficiently and regioselectively prepare α- and β-stannylvinyl ethers. 1H and 13CNMR studies of these reactions suggest that in the presence of HMPA, higher order stannylcyanocuprate, (Bu3Sn)2Cu(CN)Li2, 2a, exists in equilibrium with Gilman cuprate, (Bu3Sn)2CuLi.
对炔醇醚1与高阶
铜化合物2a、2b和2c的反应进行了
化学和光谱研究。开发了条件以高效且区域选择性地制备α-和β-
锡烯醚。对这些反应的1H和13C NMR研究表明,在HMPA存在的情况下,高阶
锡氰铜化合物(Bu3Sn)2Cu(CN)Li2,2a,与吉尔曼
铜化合物(Bu3Sn)2CuLi处于平衡状态。