Iron-catalyzed Minisci acylation of N-heteroarenes with α-keto acids
作者:Xiu-Zhi Wang、Cheng-Chu Zeng
DOI:10.1016/j.tet.2019.01.060
日期:2019.3
protocol has been developed for the Minisci acylation reactions of nitrogen-containing heteroarenes with α-keto acids. Distinct from the conventional Minisci acylation conditions, the chemistry was performed using non-noble metal Fe(II), instead of expensive Ag(I) salt, as catalyst. A wide range of substrates, including aliphatic or aromatic α-keto acids, as well as various N-heteroarenes, proved to
Intramolecular Conjugate Additions with Heterocyclic Olefins
作者:Kenneth N. Boblak、Makafui Gasonoo、Yiliang Zhang、Douglas A. Klumpp
DOI:10.1021/acs.joc.5b01701
日期:2015.12.18
been studied. In triflic acid-promoted reactions, conjugate addition is observed with pyrazine-, 2-pyrimidine-, and 2-quinoxaline-based olefins and a phenyl group nucleophile. Markovnikov addition is observed with pyridine and 5-quinoxaline-based olefins. These results are in accordance with previous observations relating the type of addition—conjugate or Markovnikov—to the positions of olefinic substituents