Diels−Alder Approach for the Construction of Halogenated, <i>o-</i>Nitro Biaryl Templates and Application to the Total Synthesis of the Anti-HIV Agent Siamenol
作者:Michael R Naffziger、Bradley O. Ashburn、Johanna R. Perkins、Rich G. Carter
DOI:10.1021/jo070740r
日期:2007.12.1
approach to halogenated biaryl templates is described. These biaryl templates are available in two steps from the corresponding aromatic aldehydes. The scope of subsequent Suzuki couplings on the biaryl chlorides is explored. Good tolerance for both electron-donating and electron-withdrawing groups in the coupling process can be achieved. Further functionalization of the biaryl templates is described
快速Diels-Alder方法介绍了卤代联芳基模板。这些联芳基模板可通过两个步骤从相应的芳族醛中获得。探索了在联芳基氯化物上随后的Suzuki偶联的范围。可以在偶联过程中对给电子基团和吸电子基团都具有良好的耐受性。描述了联芳基模板的进一步功能化。硝基部分的氢化反应同时去除苄基醚,生成邻-苯胺基,o-酚聚芳基。可以实现硝基的选择性还原。或者,可以在路易斯酸性条件下选择性地除去苄基醚。还证明了利用Diels-Alder加合物通过Cadogan环化反应合成一系列氯化咔唑。最终,报道了该技术在抗艾滋病毒的精油全合成中的应用。