Facile one-pot syntheses of bromoacetylenes from bulky trialkylsilyl acetylenes
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 trialkylsilylacetylenes, into bromoacetylenes in high yield. The reactions are chemoselective: triisopropylsilyl ethers were not deprotected under these conditions.