Ketone Synthesis by a Nickel-Catalyzed Dehydrogenative Cross-Coupling of Primary Alcohols
作者:Thomas Verheyen、Lars van Turnhout、Jaya Kishore Vandavasi、Eric S. Isbrandt、Wim M. De Borggraeve、Stephen G. Newman
DOI:10.1021/jacs.9b03280
日期:2019.5.1
intermolecular coupling of primaryalcohols and organotriflates has been developed to provide ketones by the action of a Ni(0) catalyst. This oxidative transformation is proposed to occur by the union of three distinct catalytic cycles. Two competitive oxidation processes generate aldehyde in situ via hydrogentransfer oxidation or (pseudo)dehalogenation pathways. As aldehyde forms, a Ni-catalyzed carbonyl-Heck
Unmasked Acyl Anion Equivalent from Acid Chloride with Indium: Reversed-Polarity Synthesis of Unsymmetric Aryl Aryl and Alkenyl Aryl Ketone through Palladium-Catalyzed Cross-Coupling Reaction
作者:Dohyung Lee、Taekyu Ryu、Youngchul Park、Phil Ho Lee
DOI:10.1021/ol500003g
日期:2014.2.21
A reversed-polarity synthetic method of a range of unsymmetric arylaryl and alkenyl arylketones has been developed through Pd-catalyzed cross-coupling reaction of acylindium reagents generated in situ from easily available acid chlorides and indium with various electrophiles such as aryl iodide and triflate and alkenyl triflate.
Ligand-Free Palladium-Catalyzed Carbonylative Suzuki Couplings of Vinyl Iodides with Arylboronic Acids under Substoichiometric Base Conditions
作者:Zhiyuan Yang、Pei-Xue Gong、Wei Han、Junjie Chen、Jie Zhang、Xu Gong
DOI:10.1055/a-1511-0435
日期:2021.7
A ligand-free palladium-catalyzedcarbonylation of vinyl iodides with arylboronic acids, permitting the synthesis of chalcones and α-branched enones, has been established. This reaction proceeds smoothly at ambient pressure and temperature, and works well even with a substoichiometric amount of base. Importantly, this mild, efficient, and operationally simple protocol is suitable for the late-stage
Enones from Acid Fluorides and Vinyl Triflates by Reductive Nickel Catalysis
作者:Feng-Feng Pan、Peng Guo、Chun-Ling Li、Peifeng Su、Xing-Zhong Shu
DOI:10.1021/acs.orglett.9b01164
日期:2019.5.17
A nickel-catalyzed reductive coupling between acid fluorides and vinyl triflates has been described. This method provides an efficient access to various enones and avoids the requirement for acyl or vinyl metallic reagents in the conventional approaches. The reaction proceeds with a broad range of acid fluorides and cyclic vinyl triflates, tolerating several functional groups. The utility of this synthetic