Regioselective Addition of Stannylcyanocuprates to Acetylenic Ethers: A Chemical and Spectroscopic Study
作者:Jorge A. Cabezas、Allan C. Oehlschlager
DOI:10.1055/s-1994-25492
日期:——
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。