Reductive Arylation of Arylidene Malonates Using Photoredox Catalysis
作者:Rick C. Betori、Karl A. Scheidt
DOI:10.1021/acscatal.9b03608
日期:2019.11.1
the utilization of these operators in intermolecular radical–radical arylations, while avoiding conjugate addition/dimerization reactivity that is commonly encountered in enone-based photoredox chemistry. This reactivity relies on tertiary amines that serve to both activate the arylidene malonate for single-electron reduction by a proton-coupledelectrontransfer mechanism as well as serve as a terminal
Hydropyridylation of α,β-Unsaturated Esters through Electroreduction of 4-Cyanopyridine
作者:Hua-Jian Zhou、Jing-Mei Huang
DOI:10.1021/acs.joc.2c00177
日期:2022.4.15
A mild and highly efficient method for the hydropyridylation of α,β-unsaturatedesters has been developed. This protocol provides the products smoothly with a wide substrate scope in an undivided cell under ambient conditions. Moreover, studies showed that the scope could be extended to other unsaturated compounds, including enones and aldehydes.
An electroreductive 4-pyridylation of activated alkenes was developed in an undivided cell with the assistance of Ni(acac)(2) (acac = acetylacetone). This novel protocol is compatible with a broad range of electron-poor alkenes, which are commonly regarded as challenging substrates in the previous conventional approaches. Moreover, a series of cyclic voltammetric experiments were conducted to reveal the unique role of Ni(acac)(2) differentiating reduction process of reaction partners.
ISHIKAWA FUMIYOSHI, CHEM. AND PHARM. BULL., 1980, 28, NO 5, 1394-1402