Hydrotrifluoroacetylation of Alkenes via Designer Masked Acyl Reagents
作者:Sangil Han、Kyra L. Samony、Rifat N. Nabi、Campbell A. Bache、Daniel K. Kim
DOI:10.1021/jacs.3c04294
日期:2023.5.31
functionality into organic compounds has become an important and growing research area. Although various protocols have been developed to access trifluoroketones, the use of trifluoroacetyl radicals remains virtually undeveloped. Herein, we disclose a novel method for trifluoroacetylation through an umpolung reagent, thereby transforming an electrophilicradical into a nucleophilic radical. The applicability
Enantioselective Copper-Catalyzed Reductive Coupling of Alkenylazaarenes with Ketones
作者:Aakarsh Saxena、Bonnie Choi、Hon Wai Lam
DOI:10.1021/ja3036916
日期:2012.5.23
Catalytic enantioselective methods for the preparation of chiral azaarene-containing compounds are of high value. By combining the utility of copper hydride catalysis with the ability of C=N-containing azaarenes to activate adjacent alkenes toward nucleophilic additions, the enantioselective reductive coupling of alkenylazaarenes with ketones has been developed. The process is tolerant of a wide variety of azaarenes and ketones, and provides aromatic heterocycles bearing tertiary-alcohol-containing side chains with high levels of diastereo- and enantioselection.