Nickel-Catalyzed Hydroarylation of in Situ Generated 1,3-Dienes with Arylboronic Acids Using a Secondary Homoallyl Carbonate as a Surrogate for the 1,3-Diene and Hydride Source
The nickel-catalyzedhydroarylation of 1,3-dienes with arylboronicacidsusing a secondaryhomoallylcarbonate as a surrogate for the 1,3-diene and hydridesource has been developed. The synthetic strategy allowed an efficient access to a wide array of hydroarylation products in high yields with high functional group compatibility without the use of an external hydridesource. Mechanistic experiments
Broad Scope Hydrofunctionalization of Styrene Derivatives Using Iron-Catalyzed Hydromagnesiation
作者:Alison S. Jones、James F. Paliga、Mark D. Greenhalgh、Jacob M. Quibell、Alan Steven、Stephen P. Thomas
DOI:10.1021/ol5029892
日期:2014.11.21
The highly regioselective iron-catalyzed formal hydrofunctionalization of styrene derivatives with a diverse range of electrophiles has been developed using a single, operationally simple hydromagnesiation procedure and only commercially available, bench-stable reagents. Using just 0.5 mol % FeCl2 center dot 4H(2)O and N,N,N',N;-tetramethylethylenediamine, hydromagnesiation and electrophilic trapping have been used to form new carboncarbon bonds (13 examples) and carbonheteroatom bonds (5 examples) including the products of formal cross-coupling reactions, hydroboration, hydroamination, hydrosilylation, and hydrofluorination.