Palladium triggered diene formation from nitro allylic compounds: a versatile entry into naphthalene derivatives
作者:Mansour Dolè Kerim、Shuanglong Jia、Chrysoula Theodorakidou、Sébastien Prévost、Laurent El Kaïm
DOI:10.1039/c8cc06536e
日期:——
the formation of a palladium π-allyl complex followed by a base-promoted β-hydride elimination. This reaction, combined with the condensation of ketones with nitromethane and the functionalization of the resulting nitrocycloalkenes, constitutes a very powerful synthetic tool for the formation of dienes. Particular attention has been brought to the application of this methodology to the formation of
Reactions of nitroacetic acid with aldehydes and enamines
作者:W. L. F. Armarego
DOI:10.1039/j39690000986
日期:——
Nitroaceticacid was fused with eighteen aromatic aldehydes and gave the respective β-nitrostyrenes. It was more reactive towards aldehydes with electron-withdrawing than with electron-releasing substituents. Nitromethane adducts or nitro-olefins were formed from the reaction of enamines with nitroaceticacid. Di-(3,4-dihydro-4-nitromethylquinazolinium) carbonate was obtained in good yield from quinazoline
thermodynamically-stable isomers is negligible. On the other hand, the palladium-catalyzed sulfonylation of allylic acetates with sodium benzenesulfinate is accompanied by the isomerization to give the thermodynamically-controlled products selectively. These results can be explained by assuming that allylic nitro compounds are more reactive to the palladium catalyst than allylic acetates and sulfones.
Generation and cycloaddition reactions of substituted 2-nitro-1,3-dienes
作者:Achille Barco、Simonetta Benetti、Carmela De Risi、Carlo F. Morelli、Gian P. Pollini、Vinicio Zanirato
DOI:10.1016/0040-4020(96)00476-0
日期:1996.7
by suitable partners such as methyl acrylate, cyclopentadiene or ethyl vinyl ether. The expected cycloadducts are regiochemically formed by reaction with methyl acrylate, while the initially formed adducts with cyclopentadiene underwent thermal Cope or hetero-Cope rearrangements leading to the formation of nitro-substituted bicyclic compounds. The thermal rearrangement of the oxazine-N-oxides resulting
A new multicomponent reaction of nitro compounds with isocyanides
作者:Paul Dumestre、Laurent El Kaim、Ariane Grégoire
DOI:10.1039/a900987f
日期:——
The first multicomponent reaction between nitro compounds, isocyanides and acylating agents is described, providing an original route to α-oximinoamides.