Transition-Metal Controlled Diastereodivergent Radical Cyclization/Azidation Cascade of 1,7-Enynes
作者:Yingying Zhao、Yancheng Hu、Haolong Wang、Xincheng Li、Boshun Wan
DOI:10.1021/acs.joc.6b00655
日期:2016.5.20
M–N3 complex to alkyl radicals. Following this concept, the diastereoselectivity has been switched by modulating the transition metals and the ligands. The Mn(III)-mediated radical cyclization/azidation cascade of 1,7-enynes afforded trans-fused pyrrolo[3,4-c]quinolinones, whereas the Cu(II)/bipyridine system gave cis-products.
已经开发了一种实现en烯非对映异构叠氮化的策略,它采用了从M–N 3络合物到烷基自由基的叠氮化物转移。遵循这个概念,通过调节过渡金属和配体来改变非对映选择性。Mn(III)介导的1,7-烯炔的自由基环化/叠氮化级联反应提供了反式稠合的吡咯并[3,4- c ]喹啉酮,而Cu(II)/联吡啶系统则提供了顺式产物。