Rhodium-Catalyzed Annulation Reactions of 2-Cyanophenylboronic Acid with Alkynes and Strained Alkenes
作者:Tomoya Miura、Masahiro Murakami
DOI:10.1021/ol051249u
日期:2005.7.1
A new [3 + 2] annulation reaction was developed in which 2-cyanophenylboronic acid reacted as a three-carbon component with alkynes or alkenes to afford substituted indenones or indanones. The use of an alkynoate even produced benzotropone, a formal [3 + 2 + 2] adduct. The cyclic skeletons were constructed by intramolecular nucleophilic addition of an intermediate organorhodium(I) species to a cyano group.
Ni-Catalyzed Larock Indenone Annulation with Aliphatic- and Silyl-Substituted Alkynes Supported by Mechanistic Analysis
作者:Hannah M. Hynds、Holli E. Lemons、Jasmine D. Willis、MarKayla J. Bell、Sydney E. Bottcher、Mei Lin N. Dye、Emily T. Echols、Edward L. Garner、Lauren E. Hutchinson、Caleb M. Phillips、Claudia P. Stephens、Thomas M. Gilbert、Dale J. Wilger
DOI:10.1021/acs.organomet.2c00016
日期:2022.3.28
Synthesis of 2,3-disubstituted indenones by cobalt-catalyzed [3+2] annulation of o-methoxycarbonylphenylboronic acid with alkynes
Treatment of alkynes with o-methoxycarbonylphenylboronic acid in the presence of a cobalt catalyst resulted in the corresponding 2,3-disubstituted indenones.