Cobalt−Rhodium Heterobimetallic Nanoparticle-Catalyzed Synthesis of α,β-Unsaturated Amides from Internal Alkynes, Amines, and Carbon Monoxide
作者:Ji Hoon Park、Sun Young Kim、Soo Min Kim、Young Keun Chung
DOI:10.1021/ol0706760
日期:2007.6.1
The first example of cobalt-rhodium heterobimetallic nanoparticle-catalyzed synthesis of alkenyl amides from alkynes, amines, and carbonmonoxide is described.
Cycloaddition reactions of quinoneimine N-oxides and of fluorenoneimine N-oxide: exocyclic nitrones conjugated with electron-withdrawing rings
作者:Jaffar A. Damavandy、Richard A. Y. Jones
DOI:10.1039/p19810000712
日期:——
N-Phenyl-p-benzoquinoneimine N-oxide is generally unreactive in 1,3-dipolar cycloaddition reactions, but with acetylenedicarboxylate esters it gives indolones, formed from the initial adducts by a rearrangement which entails an alkoxycarbonyl migration. The analogous nitrone derived from anthraquinone gives unrearranged adducts with a variety of 1,3-dipolarophiles; monosubstituted alkynes and alkenes