Pyridyl Directed Catalyst-Free <i>trans</i>-Hydroboration of Internal Alkynes
作者:Kang Yuan、Naoya Suzuki、Soren K. Mellerup、Xiang Wang、Shigehiro Yamaguchi、Suning Wang
DOI:10.1021/acs.orglett.5b03698
日期:2016.2.19
trans-hydroboration of internal alkynes at room temperature with 9-BBN, producing five-membered BN-heterocycles. Contrary to conventional cis-hydroboration, we demonstrate that the introduction of a pyridyl group switches the stereoselectivity of the reaction. A hydride migration mechanism has been proposed and supported by DFT calculations for the trans-hydroboration. This new hydroboration approach
An anthraquinone-based Cu(I) cyclic trinuclear complex for photo-catalyzing C-C coupling reactions
作者:Yu-Mei Wang、Kai-Ming Mo、Xiao Luo、Ri-Qin Xia、Jing-Yi Song、Guo-Hong Ning、Dan Li
DOI:10.1007/s11426-023-1777-y
日期:2023.12
organic synthesis, yet remains highly challenging. In this article, an anthraquinone-based copper(I) cyclic trinuclear complex (1) was designed and it featured strong visible light absorption, high charge separation efficiency and photochemical properties. Complex 1 as a heterogeneous photocatalyst can efficiently catalyze homo-coupling of terminal alkynes and denitrification-oxidative coupling reaction