Palladium-Catalyzed Intermolecular Oxidative Coupling Reactions of (<i>Z</i>)-Enamines with Isocyanides through Selective β-C(sp<sup>2</sup>)-H and/or C=C Bond Cleavage
two efficient palladium‐catalyzed intermolecular oxidative couplingreactions of (Z)‐enamines with isocyanides via selective β‐C(sp2)‐H and/or C=C bond cleavage have been developed, leading to controllable chemodivergent and stereoselective construction of a wide range of (E)‐β‐carbamoylenamine derivatives containing strong intramolecular hydrogen bonds. Furthermore, possible reaction pathways for these
Dutta, Milan Chandra; Chanda, Kaushik; Karim, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2004, vol. 43, # 11, p. 2471 - 2474
作者:Dutta, Milan Chandra、Chanda, Kaushik、Karim、Vishwakarma
DOI:——
日期:——
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.
Features of reactions of (E)-1-(β-aroylvinyl)pyridinium bromides with binucleophiles
作者:R. Dzh. Khachikyan、Z. G. Ovakimyan、G. A. Panosyan、R. A. Tamazyan、A. G. Ayvazyan
DOI:10.1134/s1070363216070070
日期:2016.7
Regardless of pH and a solvent nature the reactions of (E)-1-(beta-aroylvinyl)pyridinium bromides with hydrazine led to the formation of pyrazole derivatives. The salts reacted with thiourea via intermediate formation of 4-arylpyrimidine-2-thiol to give (Z)-2-[(beta-aroylvinyl)sulfanyl]-4-arylpyrimidines. In the case of N,N'-diphenylthiourea the reaction provided 6-aryl-3-aroyl-1-phenylpyridinium bromides. Pyridine hydrobromide liberated in the reaction course has a major influence on the process chemoselectivity.
Devi; Dutta; Nongkhlaw, Journal of the Indian Chemical Society, 2010, vol. 87, # 6, p. 739 - 742