作者:S. I. Zav'yalov、O. F. Dorofeeva、E. E. Rumyantseva、A. G. Zavozin
DOI:10.1007/bf02226529
日期:1995.2
Dihydroresorcinol and dimedone are condensed with aromatic amines at room temperature under the action of CiSiMe3-DMFA system to give 3-anilino-2-cyclohexene derivatives in 70–90% yield.
Efficient Synthesis of Functionalized Dihydro-1<i>H</i>-indol-4(5<i>H</i>)-ones via One-Pot Three-Component Reaction under Catalyst-Free Conditions
作者:Hui-Yan Wang、Da-Qing Shi
DOI:10.1021/co4000198
日期:2013.5.13
A facile and efficient one-pot procedure for the preparation of functionalized dihydro-1H-indol-4(5H)-ones by a catalyst-free, three-component reaction of 1,3-dicarbonyl compounds, arylglyoxal monohydrate and enaminones under mild conditions in excellent yield is reported. This synthesis was confirmed to follow the group-assisted-purification (GAP) chemistry process, which can avoid traditional purifications
Facile one-pot three-component synthesis of diverse 2,3-disubstituted isoindolin-1-ones using ZrO<sub>2</sub> nanoparticles as a reusable dual acid–base solid support under solvent-free conditions
A facileone-potthree-component protocol for the synthesis of a series of multi-functionalized 2,3-disubstituted isoindolin-1-ones has been developed using ZrO2 nanoparticles as a dual acid–base solid support under solvent-free conditions. The surface of the ZrO2 nanoparticles, which is embedded with active hydroxyl groups, oxyanions and Zr4+ ions, efficiently catalyses the condensation of 2-carboxybenzaldehyde
KIO<sub>3</sub>-Catalyzed Aerobic Cross-Coupling Reactions of Enaminones and Thiophenols: Synthesis of Polyfunctionalized Alkenes by Metal-Free C–H Sulfenylation
The synthesis of polyfunctionalized aminothioalkenes has been realized via the direct C–H sulfenylation of enaminones and analogous enamines. These cross-coupling reactions have been achieved by simple KIO3 catalysis under aerobic conditions without employing any transition metal catalyst or additional oxidant. The employment of bio-basedgreensolventethyllactate as the reaction medium constitutes
Synthesis of fused-tetrahydropyrimidines: one-pot methylenation–cyclization utilizing two molecules of CO<sub>2</sub>
作者:Yulei Zhao、Xuqiang Guo、Yulan Du、Xinrui Shi、Shina Yan、Yunlin Liu、Jinmao You
DOI:10.1039/d0ob01504k
日期:——
A methylenation–cyclization reaction, employing cyclic enaminones with primary aromatic amines and two molecules of CO2, furnishing fused-tetrahydropyrimidines, is discussed. In this Cs2CO3 and ZnI2 catalyzed one-pot two-step procedure, two molecules of CO2 were selectively converted to methylene groups. The multi-component reaction might proceed through the formation of bis(silyl)acetal which was
讨论了使用环状烯胺酮与伯芳香胺和两个 CO 2分子,提供稠合四氢嘧啶的亚甲基化-环化反应。在这个Cs 2 CO 3和ZnI 2催化的一锅两步法中,两个CO 2分子被选择性地转化为亚甲基。多组分反应可能通过形成双(甲硅烷基)缩醛进行,然后是缩合和进一步的氮杂-狄尔斯-阿尔德反应。氢喹唑啉、氢环戊二烯[ d ]嘧啶和氢茚并[1,2- d ]嘧啶衍生物可以以CO 2作为C1源有效地制备。