Palladium-Catalyzed Reductive Carbonylation of Aryl Halides with<i>N</i>-Formylsaccharin as a CO Source
作者:Tsuyoshi Ueda、Hideyuki Konishi、Kei Manabe
DOI:10.1002/anie.201303926
日期:2013.8.12
Easy peasy: The title reaction employs N‐formylsaccharin, which is an easily accessible crystalline compound, as an effective COsource. The reactions proceed with a small excess of the COsource at moderate temperatures and were successfully applied to a wide range of aryl bromides. DMF=N,N‐dimethylformamide, dppb=1,4‐bis‐(diphenylphosphino)butane.
Trichlorophenyl Formate: Highly Reactive and Easily Accessible Crystalline CO Surrogate for Palladium-Catalyzed Carbonylation of Aryl/Alkenyl Halides and Triflates
作者:Tsuyoshi Ueda、Hideyuki Konishi、Kei Manabe
DOI:10.1021/ol302593z
日期:2012.10.19
The high utility of 2,4,6-trichlorophenyl formate, a highly reactive and easilyaccessible crystalline CO surrogate, is demonstrated. The decarbonylation with NEt3 to generate CO proceeded rapidly at rt, thereby allowing external-CO-free Pd-catalyzed carbonylation of aryl/alkenyl halides and triflates. The high reactivity of the CO surrogate enabled carbonylation at rt and significantly reduced the
Palladium-Catalyzed External-CO-Free Carbonylation of Aryl Bromides Using 2,4,6-Trichlorophenyl Formate
作者:Hideyuki Konishi、Tomoyuki Sekino、Kei Manabe
DOI:10.1248/cpb.c18-00042
日期:2018.5.1
A practical Pd-catalyzed carbonylation of (hetero)arylbromides using a crystalline carbon monoxide (CO) surrogate, 2,4,6-trichlorophenyl formate (TCPF), was developed. This reaction proceeds without the slow addition technique that was previously required and with a low catalyst loading (1 mol%). The utility of this Pd-catalyzed external-CO-free carbonylation using TCPF was demonstrated in the synthesis