Modular access to formamide-tethered α-halo ynones via the deconstructive oxo-halogenation of readily available α-alkynyl eneformamides
摘要:
Herein, we describe a chemoselective, regioselective, modular, and efficient deconstructive oxo-halogenation strategy, which skeletally remodels readily available cyclic alpha-alkynyl eneformamides into formamide-tethered alpha-halo ynones. This scaffold-hopping transformation furnishes diverse architectures that would be challenging to achieve through traditional disconnections. Published by Elsevier Ltd.
Direct Access to Functionalized Azepanes by Cross-Coupling with α-Halo Eneformamides
作者:Timothy K. Beng、Sidney M. Wilkerson-Hill、Richmond Sarpong
DOI:10.1021/ol403671s
日期:2014.2.7
The synthesis of functionalizedazepanes was accomplished through the palladium-mediated cross-coupling of α-haloeneformamides with mostly unactivated nucleophiles under mild conditions. Alkenylations proceeded with excellent stereoselectivitiy. In most cases, high yields of the coupling products were obtained.