已经证明了通过炔丙醇与3-氧代酰胺的银(I)/碱促进的反应的呋喃-3-甲酰胺的新颖且容易的区域选择性合成。这一一锅方案通过级联亲核加成,分子内环化,消除和异构化反应,为多种三取代呋喃-3-羧酰胺提供了一种快速的合成方法。通过使用取代的炔丙醇,由3-氧代酰胺经C–N键断裂,通过Ag 2 CO 3促进的反应,具有高立体选择性的(Z)-烯胺酮。
Water-Promoted Synthesis of Enaminones: Mechanism Investigation and Application in Multicomponent Reactions
作者:Yunyun Liu、Rihui Zhou、Jie-Ping Wan
DOI:10.1080/00397911.2012.715712
日期:2013.9.17
Highly stereoselective synthesis of Z-enaminones bearing reactive secondary amino group has been successfully performed in water using tertiary amino group functionalized enaminones under ambient conditions. An interesting promotion effect of water on the reaction via hydrolysis-dehydration condensation has been observed through a designed isotope labeling experiment. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.
Silver(<scp>i</scp>)/base-promoted propargyl alcohol-controlled regio- or stereoselective synthesis of furan-3-carboxamides and (<i>Z</i>)-enaminones
作者:Sabera Sultana、Jae-Jin Shim、Sung Hong Kim、Yong Rok Lee
DOI:10.1039/c8ob01791c
日期:——
A novel and facile regioselective synthesis of furan-3-carboxamides by a silver(I)/base-promoted reaction of propargyl alcohol with 3-oxo amides has been demonstrated. This one-pot protocol provides a rapid synthetic approach to diverse trisubstituted furan-3-carboxamides via cascade nucleophilic addition, intramolecular cyclization, elimination, and isomerization reactions. Employing a substituted
已经证明了通过炔丙醇与3-氧代酰胺的银(I)/碱促进的反应的呋喃-3-甲酰胺的新颖且容易的区域选择性合成。这一一锅方案通过级联亲核加成,分子内环化,消除和异构化反应,为多种三取代呋喃-3-羧酰胺提供了一种快速的合成方法。通过使用取代的炔丙醇,由3-氧代酰胺经C–N键断裂,通过Ag 2 CO 3促进的反应,具有高立体选择性的(Z)-烯胺酮。
Acid-Catalyzed Cascade Reactions of Enaminones with Aldehydes: C-H Functionalization To Afford 1,4-Dihydropyridines
作者:Jingyu Yang、Chengyu Wang、Xin Xie、Hongfeng Li、Yanzhong Li
DOI:10.1002/ejoc.201000607
日期:2010.8
An efficient acid-catalyzed approach to the synthesis of functional 1,4-dihydropyridines from the reaction of readily available enaminones with aldehydes has been developed. This methodology was realized by a cascade reaction involving first formation of divinylmethanes and subsequent intramolecular cyclization.