为环外β-烯胺酮的分子内环化一个高效和灵活的协议已经公开了carbazolones和咪唑并[1,2的合成一个]吡啶通过高价碘促进的抗衡阴离子控制自由基机理(III) 。HTIB和AgSbF 6的协同行为在通过CC和CN键形成所需的分子内环化过程中起着至关重要的作用。机械学的见解表明,系统中涉及的两个竞争性反应是由抗衡阴离子的性质决定的,抗衡阴离子的性质决定了最终产物的形成。制备并分离了各种咔唑酮和咪唑并[1,2- a ]吡啶分子,收率良好至极佳。
Synthesis and anticonvulsant activity of enaminones. 2. Further structure-activity correlations
作者:K. R. Scott、Ivan O. Edafiogho、Erica L. Richardson、Vida A. Farrar、Jacqueline A. Moore、Elizabeth I. Tietz、Christine N. Hinko、Hyejung Chang、Afif El-Assadi、Jesse M. Nicholson
DOI:10.1021/jm00066a003
日期:1993.7
shown to be safer alternatives, the most notable was methyl 4-[(p-bromophenyl)amino]-6-methyl-2-oxocyclohex-3-en-1-oate, 13. Compound 13 had an ip ED50 of 4 mg/kg in the rat and a TD50 of 269 mg/kg, providing a protective index (TD50/ED50) of > 67. By variation in the ring size, additional aromatic substitutions and the synthesis of acyclic analogs, these newer compounds provide a more definitive insight
One-Pot Synthesis of 3-Functionalized 4-Hydroxycoumarin under Catalyst-Free Conditions
作者:Yang Gao、Guo-Ning Zhang、Juxian Wang、Xiaoguang Bai、Yiliang Li、Yucheng Wang
DOI:10.3390/molecules23010235
日期:——
A concise and efficient one-pot synthesis of 3-functionalized 4-hydroxycoumarin derivatives via a three-component domino reaction of 4-hydroxycoumarin, phenylglyoxal and 3-arylaminocyclopent-2-enone or 4-arylaminofuran-2(5H)-oneunder catalyst-free and microwaveirradiationconditions is described. This synthesis involves a group-assisted purification process, which avoids traditional recrystallization
A quick and easy access to a series of thiocyanated enaminones and 2‐iminothiazolones using
<scp>PIDA</scp>
under mild conditions
作者:Daiki Matsui、Shinji Tanimori
DOI:10.1002/jhet.4492
日期:2022.9
A series of thiocyanatedenaminones and 2-iminothiazolones have been synthesized usingPIDA as an oxidant with Brønsted acid under the mild reaction conditions starting from the acyclic and cyclic enaminones. Direct synthesis of 2-iminothiazolones have also been achieved by treating alkali solution after thiocyanation in a one-pot manner.
Cu2O-Promoted cascade reaction of O-halobenzoate and enaminones for the synthesis of isoquinolinone derivatives
作者:Yang Liang、Rui Wang
DOI:10.1016/j.tetlet.2022.154287
日期:2023.1
A practical Cu-catalyzed cascade cyclization of o-halobenzoate with enaminones to construct isoquinolinone derivatives is described. The process involves a Cu-catalyzed intermolecular CC coupling and intramolecular azacyclization, wherein a wide range of enaminones could be tolerated.
描述了一种实用的 Cu 催化的邻卤代苯甲酸酯与烯胺酮的级联环化以构建异喹啉酮衍生物。该过程涉及 Cu 催化的分子间 C C 偶联和分子内氮杂环化,其中可以耐受多种烯胺酮。
One-pot domino reactions for synthesis of heterocyclic[3.3.3]propellanes and spiro[cyclopenta[b]pyridine-4,2′-indenes]
作者:Li-Juan Zhang、Chao-Guo Yan
DOI:10.1016/j.tet.2013.04.048
日期:2013.6
An efficient synthetic procedure for the functionalized heterocyclic[3.3.3]propellanes was successfully developed by one-pot domino reaction of ninhydrin, malononitrile with 3-arylamino-2-cyclohexenones and their 5,5-dimethyl derivatives in the presence of triethylamine in ethanol at room temperature. On the other hand the similar one-pot reaction containing 3-arylamino-2-cyclopentenones resulted in the functionalized spiro[cyclopenta[b]pyridine-4,2'-indenes] in moderate yields. (C) 2013 Elsevier Ltd. All rights reserved.