A new, direct, and efficient synthesis of benzonaphthyridin-5-ones
摘要:
Microwave-assisted Suzuki cross-coupling reaction of 2-fluorophenylboronic acid with all orthochlorocyanopyridine isomers allowed the rapid syntheses of key intermediates for anionic ring closure, which was performed using potassium hydroxide under microwave irradiation to give benzonaphthyridin-5-ones in high yields. (c) 2006 Elsevier Ltd. All rights reserved.
Silver-Catalyzed Minisci Reactions Using Selectfluor as a Mild Oxidant
作者:Jordan D. Galloway、Duy N. Mai、Ryan D. Baxter
DOI:10.1021/acs.orglett.7b02706
日期:2017.11.3
A new method for silver-catalyzed Minisci reactions usingSelectfluor as a mild oxidant is reported. Heteroarenes and quinones both participate in radical C–H alkylation and arylation from a variety of carboxylic and boronic acid radical precursors. Several oxidatively sensitive and highly reactive radical species are successful, providing structures that are challenging to access by other means.
Synthesis of azaphenanthridines via anionic ring closure
作者:Henriette M. Hansen、Morten Lysén、Mikael Begtrup、Jesper L. Kristensen
DOI:10.1016/j.tet.2005.08.051
日期:2005.10
A new and convergent synthesis of azaphenanthridines via an anionic ringclosure is reported. Ortho-lithiation/in situ borylation of cyanopyridines produces the corresponding cyanopyridylboronic esters, which undergo a Suzuki–Miyaura cross-coupling to give the key intermediates. Addition of lithium morpholide produces the azaphenanthridines.
A new, direct, and efficient synthesis of benzonaphthyridin-5-ones
作者:Thomas Cailly、Frédéric Fabis、Sylvain Rault
DOI:10.1016/j.tet.2006.04.030
日期:2006.6
Microwave-assisted Suzuki cross-coupling reaction of 2-fluorophenylboronic acid with all orthochlorocyanopyridine isomers allowed the rapid syntheses of key intermediates for anionic ring closure, which was performed using potassium hydroxide under microwave irradiation to give benzonaphthyridin-5-ones in high yields. (c) 2006 Elsevier Ltd. All rights reserved.