FeCl<sub>3</sub>-Catalyzed Regio-Divergent Carbosulfenylation of Unactivated Alkenes: Construction of a Medium-Sized Ring
作者:Leiyang Lv、Zhiping Li
DOI:10.1021/acs.joc.8b01621
日期:2018.9.21
carbosulfenylation of unactivated alkenes with electrophilic N-sulfenophthalimides has been developed. This protocol provides a straightforward and efficient access to various medium-sized rings, especially strained 7- and 8-membered carborings with a sulfur atom attached. The endo/exo selectivity in the reaction depends on the atom number of the chain between arene and alkene. Broad substrate scope, high
Palladium-catalyzed double-bond migration of unsaturated hydrocarbons accelerated by tantalum chloride
作者:Masahito Murai、Kengo Nishimura、Kazuhiko Takai
DOI:10.1039/c9cc00223e
日期:——
The operationally simple palladium-catalyzed double-bond migration without heteroatom-containing coordinating functional groups is described. Addition of TaCl5 as a second catalyst greatly enhanced the migration efficiency to provide β-alkylstyrenes through migration of up to a five-carbon chain. Both catalysts were commercially available, and the reaction occurred without external ligands under neutral