Transition-Metal-Free Carbofluorination of TBS-Protected Nitrogen-Containing Cyclic Enynols: Synthesis of Fluorinated Azabicycles
作者:Ming-Chang P. Yeh、Chia-Jung Liang、Tzu-Lin Huang、Hsiao-Ju Hsu、Yu-Shuo Tsau
DOI:10.1021/jo400634c
日期:2013.6.7
The synthesis of fluorinated azabicycles from tert-butyldimethylsilyl-protected N-containing cyclic enynols using inexpensive BF3·OEt2 is described. In this reaction, BF3 reacts as both the Lewis acid and the fluoride source for cyclization/fluorination of the TBS-protected cyclic N-containing enynols. The method provides an easy access to fluorinated azabicycles where a new C(sp2)–F bond and a new