Functionalizations of [6]- and [7]Helicenes at Their Most Sterically Hindered Positions
作者:Kamil Paruch、Libor Vyklický、David Zhigang Wang、Thomas J. Katz、Christopher Incarvito、Lev Zakharov、Arnold L. Rheingold
DOI:10.1021/jo035057t
日期:2003.10.1
transformed into other functional groups (including phosphine oxides and acetylenes), the ether functions adjacent to these functional groups can then be removed, and the phenols can be oxidized to quinone-acetals. An alternative way to introduce functional groups next to the phenols is to rearrange their phosphate esters. Two reactions that differentiate the ends of the helicenes are also described.