One-Pot Synthesis of Novel Functionalized Fused Pyridine Derivatives via Consecutive Pyrrolidine Ring-Closure/Ring-Opening/Formal Aza-Diels–Alder Reactions
作者:Tanzilya Rizbayeva、Andrey Smolobochkin、Almir S. Gazizov、Julia Voronina、Viktor V. Syakaev、Anna G. Strelnik、Igor Litvinov、Alexander R. Burilov、Michail Pudovik
DOI:10.1021/acs.joc.2c00827
日期:2022.9.2
In this article, we report a highly regioselective method for the synthesis of new fused pyridine derivatives─2,3-disubstituted quinolines and 1,2-dihydro-3H-pyrazolo[3,4-b]pyridin-3-one derivatives. The method is based on the reaction of 1,1-diethoxybutane derivatives with aromatic and heterocyclic nucleophiles. The isolated compounds are similar to the products formed as a result of the Debner–Miller
在本文中,我们报告了一种高度区域选择性的方法,用于合成新的稠合吡啶衍生物─2,3-二取代喹啉和 1,2-二氢-3 H-吡唑并[3,4- b ]吡啶-3-酮衍生物。该方法基于 1,1-二乙氧基丁烷衍生物与芳族和杂环亲核试剂的反应。分离出的化合物与 Debner-Miller 反应形成的产物相似。然而,我们已经表明,1,1-二乙氧基丁烷衍生物与(杂)芳族胺的相互作用是根据与 Doebner-Miller 反应不同的机理进行的。所提出的方法的特点是可以获得广泛的取代喹啉和 1,2-dihydro-3 H -pyrazolo[3,4- b]pyridin-3-one 衍生物一步完成,无需使用昂贵的含金属催化剂,产品收率高。