Oxidative Asymmetric Formal Aza-Diels–Alder Reactions of Tetrahydro-β-carboline with Enones in the Synthesis of Indoloquinolizidine-2-ones
作者:Xiang Wu、Shi-Bao Zhao、Lang-Lang Zheng、You-Gui Li
DOI:10.3390/molecules23092228
日期:——
Ru-catalyzed tandem amine oxidative dehydrogenation/formal aza-Diels⁻Alder reaction for enantio- and diastereoselective synthesis of indoloquinolizidine-2-ones from tetrahydro-β-carbolines and α,β-unsaturated ketones is described. The reaction proceeds via tandem ruthenium-catalyzed amine dehydrogenation using tert-butyl hydroperoxide (TBHP) as the oxidant and a chiral thiourea-catalyzed formal aza-[4
描述了Ru催化的串联胺氧化脱氢/形式的氮杂-Diels⁻Alder反应,用于从四氢-β-咔啉和α,β-不饱和酮的对映体和非对映体选择性合成吲哚并喹喔啉-2-酮。该反应通过叔丁基过氧化氢(TBHP)作为氧化剂和手性硫脲催化的正式氮杂-[4 + 2]环加成反应,通过串联钌催化的胺脱氢进行,为合成这些有价值的杂环化合物提供了分步经济的策略产品。