Reactions of lithiated aromatic heterocycles with carbon monoxide
作者:Guadalupe E. García Liñares、Norma S. Nudelman
DOI:10.1002/poc.661
日期:2003.8
4-bis(5-methyl-2-furanyl)butane-2,3-dione, reaction conditions were achieved to obtain this difficult to prepare derivative in 50% yield. To the best of our knowledge, this is the first report on the reaction of lithiated aromatic heterocycles with CO: evidence is given on the involvement of proton transfers in the reactions of 2-furyllithium and 2-thienyllithium, while the reaction of 5-methyl-2-furyllithium seems
Unveiling Orthogonal Reactivity of Substituted 2-(2-Azidostyryl)furans: Thermolysis and Photolysis versus Catalysis
作者:Taimuraz T. Magkoev、Oleg P. Demidov、Vladimir T. Abaev、Maxim G. Uchuskin、Petrakis N. Chalikidi
DOI:10.1021/acs.joc.4c00355
日期:2024.4.19
of substituted 2-(2-azidostyryl)furans has been reported. The products of catalytic decomposition align with predictable patterns, consistent with established literature data. In contrast, photolysis and thermolysis lead to the formation of unexpected products. In this case, generated nitrenes surprisingly exhibited an affinity for the furan core, deviating from the anticipated attack on the olefin moiety
Gold Catalysis: Non-Spirocyclic Intermediates in the Conversion of Furanynes by the Formal Insertion of an Alkyne into an Aryl-Alkyl CC Single Bond
作者:A. Stephen K. Hashmi、Tobias Häffner、Weibo Yang、Sreekumar Pankajakshan、Sascha Schäfer、Lara Schultes、Frank Rominger、Wolfgang Frey
DOI:10.1002/chem.201200306
日期:2012.8.20
It takes al‐kynes: The formation of furyl‐substituted heterocycles from furanynes with donor groups on the furan–alkyne tether and mechanistic control experiments indicate the involvement of open‐chained carbenium ions in the overall insertion of an alkyne into a CCbond, rather than the usual spirocyclic intermediates (see scheme).