Chemoselective Suzuki-Miyaura Coupling of Bromophenyl-Substituted Bromoallenes with Arylboronic Acids
摘要:
Developing highly chemoselective Suzuki-Miyaura coupling reactions is of great value in the synthetic chemistry. Here we report the results of palladium-catalyzed reaction of bromoallenes containing an aryl bromide moiety with arylboronic acids. It is found that the C-Br insertion exclusively takes place on bromoallene rather than on the benzene ring. Theoretical calculations demonstrate that the corresponding oxidative addition intermediate has a much lower free energy.
Palladium‐Catalyzed Desulfitative Cross‐Coupling Reaction of Sodium Sulfinates with Propargylic Carbonates
作者:Anni Qin、Guirong Zhu、Qin Chen、Hui Qian、Shengming Ma
DOI:10.1002/adsc.201900698
日期:2019.10.22
Desulfitative cross‐coupling of propargylic carbonates with sodium sulfinates has been observed. The reaction exhibited good functional group compatibility affording allenes as a single product. Potential anticancer activities of these allene products were also studied.