作者:Taeho Lee、Hee Ryong Kang、Shinae Kim、Sanghee Kim
DOI:10.1016/j.tet.2006.02.016
日期:2006.4
1-trialkylsilylacetylenes to haloacetylenes in situ remains desirable, especially when the corresponding terminal acetylenes are unstable. Using AgF and NBS, we have successfully transformed various 1-(trialkylsilyl)acetylenes, including bulky trialkylsilyl acetylenes, into bromoacetylenes in high yield. The reactions are chemoselective: triisopropylsilyl ethers were not deprotected under these conditions.
因为卤代炔烃是合成化学中的通用中间体,所以仍然需要开发新的有效方法以将1-三烷基甲硅烷基乙炔原位转化为卤代乙炔,特别是当相应的末端乙炔不稳定时。使用AgF和NBS,我们已成功地将各种1-(三烷基甲硅烷基)乙炔(包括大体积的三烷基甲硅烷基乙炔)以高收率转化为溴乙炔。反应是化学选择性的:在这些条件下三异丙基甲硅烷基醚未脱保护。