2720-52-7Relevant academic research and scientific papers
Fe-Catalyzed Selective Cyclopropanation of Enynes under Photochemical or Thermal Conditions
Picher, Marie-Idrissa,Plietker, Bernd
supporting information, p. 340 - 344 (2020/01/11)
The nucleophilic Fe-complex Bu4N[Fe(CO)3(NO)] (TBA[Fe]) catalyzes the cyclopropanation of enynes to substituted propargyl cyclopropanes using diazoesters as carbene surrogates. The catalyst can be activated either thermally in the presence of catalytic amounts of 4-nitroanisole or under photochemical conditions. Cyclopropanation occurs selectively at the enyne moiety; alternative olefinic moieties remain intact.
Triple-Bond Insertion Triggers Highly Regioselective 1,4-Aminomethylamination of 1,3-Enynes with Aminals Enabled by Pd-Catalyzed C-N Bond Activation
Zhang, Yanchen,Yu, Bangkui,Gao, Binjian,Zhang, Tianze,Huang, Hanmin
supporting information, (2019/01/21)
A highly chemo- and regioselective 1,4-aminomethylamination of simple enynes with aminals to allenic 1,5-diamines by taking advantage of C-N bond activation has been reported. The reaction proceeds under mild reaction conditions and can be performed under
Triple-Bond Insertion Triggers Highly Regioselective 1,4-Aminomethylamination of 1,3-Enynes with Aminals Enabled by Pd-Catalyzed C-N Bond Activation
Zhang, Yanchen,Yu, Bangkui,Gao, Binjian,Zhang, Tianze,Huang, Hanmin
supporting information, p. 535 - 539 (2019/01/24)
A highly chemo- and regioselective 1,4-aminomethylamination of simple enynes with aminals to allenic 1,5-diamines by taking advantage of C-N bond activation has been reported. The reaction proceeds under mild reaction conditions and can be performed under
Br?nsted Acids Enable Three Molecular Rearrangements of One 3-Alkylidene-2H-1,2-oxazine Molecule into Distinct Heterocyles
Mokar, Bhanudas Dattatray,Liu, Jinxian,Liu, Rai-Shung
supporting information, p. 1038 - 1041 (2018/02/23)
This work describes three different strategies to structurally rearrange one 3-alkylidene-2H-1,2-oxazine molecule into three distinct heterocycles using HOTf, propiolic acid, and silica gel, respectively. The mechanisms of these rearrangement reactions in
Regioselective solvent-dependent benzannulation of conjugated enynes
Puenner, Florian,Hilt, Gerhard
supporting information; experimental part, p. 3617 - 3619 (2012/05/20)
The transformation of enynes under cobalt-catalysis leads to symmetrical benzannulation products in dichloromethane. In tetrahydrofuran the cobalt-catalysed reactions afforded the unprecedented unsymmetrical benzannulation products in moderate to good yields and good regioselectivities. In addition, cyclotrimerisation of the alkyne subunit can be realised when electron-deficient enynes are applied in the cobalt-catalysed transformations to generate 1,2,4-trivinylbenzene derivatives using tetrahydrofuran as solvent.
