The Ni-Mediated Cyclocarbonylation of Allyl Halides and Alkynes Made Catalytic. Evidence Supporting the Involvement of Pseudoradical NiI Species in the Mechanism
摘要:
We report here on a highly efficient catalytic method to synthesize intermolecularly the cyclopentane skeleton from starting products as simple as allyl halides, alkynes, and carbon monoxide under very mild reaction conditions by means of a substoichiometric amount of iron, acetone, and a catalytic amount of Ni(II) iodide.
Versatile chemoselectivity in Ni-catalyzed multiple bond carbonylations and cyclocarbonylations in CO2-expanded liquids
作者:Daniel del Moral、Anna M. Banet Osuna、Alba Córdoba、Josep M. Moretó、Jaume Veciana、Susagna Ricart、Nora Ventosa
DOI:10.1039/b908253k
日期:——
Selective mono or double carbonylations could be achieved by using CO2-expanded liquids in [2 + 2 + 1] carbonylative reactions of alkenes or acetylenes with allyl bromides catalyzed by Ni(I).