Cycloaromatization Approach to Polysubstituted Indolizines from 2-Acetylpyrroles: Decoration of the Pyridine Unit
摘要:
A new synthetic route to indolizines with various substituents on the pyridine moiety was developed by utilizing a facile cycloaromatization of 2-acetylpyrrole derivatives. Without isolation, the resulting intermediates were allowed to react with various electrophiles to afford a range of indolizines. In particular, Suzuki-Miyaura cross-coupling of O-triflates with (hetero)arylboronic acids permitted introduction of diverse substituents at the C8 position of an indolizine skeleton.
Michael-Aldol Double Elimination Cascade to Make Pyridines: Use of Chromone for the Synthesis of Indolizines
作者:Dirgha Raj Joshi、Ikyon Kim
DOI:10.1021/acs.joc.1c00981
日期:2021.8.6
having two different acyl groups at the C5 and C7 positions is described where chromone is employed as a two-carbon unit for the synthesis of a pyridine moiety for the first time. Various analogues were readily accessed in good yields under metal-free and eco-friendly conditions. Further manipulation of the resulting products allowed entry to novel indolizine-heterocycle adducts, which are difficult to
Cycloaromatization Approach to Polysubstituted Indolizines from 2-Acetylpyrroles: Decoration of the Pyridine Unit
作者:Jin Ho Lee、Ikyon Kim
DOI:10.1021/jo302590a
日期:2013.2.1
A new synthetic route to indolizines with various substituents on the pyridine moiety was developed by utilizing a facile cycloaromatization of 2-acetylpyrrole derivatives. Without isolation, the resulting intermediates were allowed to react with various electrophiles to afford a range of indolizines. In particular, Suzuki-Miyaura cross-coupling of O-triflates with (hetero)arylboronic acids permitted introduction of diverse substituents at the C8 position of an indolizine skeleton.