Assisted Tandem Catalytic Cross Metathesis–Oxidation: In One Flask from Styrenes to 1,2-Diketones and Further to Quinoxalines
作者:Bernd Schmidt、Stefan Krehl、Sylvia Hauke
DOI:10.1021/jo4005684
日期:2013.6.7
synthesized from styrenes by combining a cross metathesis and a Ru-catalyzed alkene oxidation to an assisted tandem catalytic sequence. The synthesis relies on the use of just one metathesis precatalyst, which was in situ converted to the oxidation catalyst by addition of an alkyl hydroperoxide as a chemical trigger and oxidant. The one-flask sequence can be extended beyond 1,2-diketones to quinoxalines, by
通过结合交叉复分解和Ru催化的烯烃氧化至辅助串联催化序列,由苯乙烯合成1,2-二酮。合成依赖于仅使用一种易位预催化剂,该预催化剂通过加入烷基氢过氧化物作为化学触发剂和氧化剂而原位转化为氧化催化剂。通过氧化产物与邻苯二胺的缩合,一个烧瓶的序列可以扩展到1,2-二酮以外的喹喔啉。