Heterogeneous Titania-Photoredox/Nickel Dual Catalysis: Decarboxylative Cross-Coupling of Carboxylic Acids with Aryl Iodides (Retracted article. See vol. 8, pg. 9847, 2018)

摘要

The efficient, mild, and semiheterogeneous decarboxylative cross-coupling of a variety alkyl carboxylic acids with aryl iodides has been accomplished through a merger of TiO2 photoredox and nickel cross-coupling chemistries. The protocol is tolerant to a wide range of substituted aryl iodides and alkyl carboxylic acids. Through replacement of the commonly employed Ir transition-metal complexes with P25 TiO2 as photocatalyst, we show that these transformations can be heterogenized with little effect on the efficiency of these transformations, while at the same time decreasing the associated costs due to the reusability and inexpensive nature of the TiO2 photocatalyst. KEYWORDS: heterogeneous, dual catalysis, nickel, titania, decarboxylative cross-coupling, photoredox