Ruthenium-Catalyzed Oxidative Formal Aza-Diels-Alder Reaction: Enantioselective Synthesis of Benzo[<i>a</i>
]quinolizine-2-ones
作者:Yuan Yao、Hai-Jie Zhu、Fang Li、Cheng-Feng Zhu、Yun-Fei Luo、Xiang Wu、Eric Assen B. Kantchev
DOI:10.1002/adsc.201700738
日期:2017.9.18
11bS)‐benzo[a]quinolizine‐2‐one derivatives in good enantio‐ and diastereoselectivity by a one‐pot oxidative formal aza‐Diels–Alder reaction of 1,2,3,4‐tetrahydroisoquinolines 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+2] cycloaddition, providing
一种通过一锅氧化1,2,3的形式正式氮杂-Diels-Alder反应制备具有良好对映异构和非对映选择性的热力学(4 R,11b S)-苯并[ a ]喹诺嗪-2-酮衍生物的方法描述了,4-四氢异喹啉和α,β-不饱和酮。该反应通过叔丁基氢过氧化物(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而进行,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。