作者:Henrik Sundén、Ramon Rios、Yongmei Xu、Lars Eriksson、Armando Córdova
DOI:10.1002/adsc.200700175
日期:2007.12.10
The direct amine-catalyzed enantioselective Diels–Alder reaction between α,β-unsaturated cyclic ketones and nitroolefins is presented. A simple diamine catalyzes the asymmetric Diels–Alder reaction with high stereoselectivity and furnishes the corresponding Diels–Alder adducts in good to high yields with >25:1 dr and up to 86 % ee. The study demonstrates a convenient entry to functionalized bicyclic
提出了α,β-不饱和环酮与硝基烯烃之间直接胺催化的对映选择性Diels-Alder反应。简单的二胺可以高立体选择性催化不对称的Diels-Alder反应,并以> 25:1 dr和高达86%ee的高产率提供相应的Diels-Alder加合物。这项研究表明,方便地进入含有四个立体中心的功能化双环分子,这四个立体中心具有出色的非对映选择性和良好至高对映选择性。