6067-45-4Relevant articles and documents
Sequentially Pd/Cu-Catalyzed Alkynylation-Oxidation Synthesis of 1,2-Diketones and Consecutive One-Pot Generation of Quinoxalines
Niesobski, Patrik,Martínez, Ivette Santana,Kustosz, Sebastian,Müller, Thomas J. J.
supporting information, p. 5214 - 5218 (2019/07/31)
We report a simple and efficient one-pot synthesis of 1,2-diketones by concatenation of two Pd/Cu-catalyzed processes: Pd0/CuI-catalyzed Sonogashira coupling of terminal alkynes with aryl (pseudo)halides furnishes internal alkynes, which are directly transformed by PdII/CuII-catalyzed Wacker-type oxidation with DMSO and oxygen as dual oxidants to furnish 1,2-diketones. With this efficient, catalyst economical process, various aryl iodides and triflates are efficiently transformed in high yields into symmetrically and unsymmetrically substituted 1,2-diketones with various functional groups. This process can be readily extended to a consecutive one-pot synthesis of quinoxalines in a diversity-oriented fashion.
Synthesis of smart bimetallic nano-Cu/Ag@SiO2 for clean oxidation of alcohols
Saha, Arijit,Payra, Soumen,Banerjee, Subhash
, p. 13377 - 13381 (2017/11/27)
Here, we have demonstrated the synthesis and characterization of silica supported bimetallic copper/silver nanoparticles (Cu/Ag@SiO2 NPs) and their application in the clean oxidation of benzoins/benzyl alcohols in the presence of tert-butyl hydroperoxide as a mild oxidant. All the reactions were very fast (4 h) and high yielding (95-99%), and the Cu/Ag@SiO2 NPs were very stable under the reaction conditions. The catalyst was recovered simply by filtration and reused eight times without loss of its catalytic performance.
O-Benzoyl pyridine aldoxime and amidoxime derivatives: Novel efficient DNA photo-cleavage agents
Karamtzioti, Paraskevi,Papastergiou, Asterios,Stefanakis, John G.,Koumbis, Alexandros E.,Anastasiou, Ioanna,Koffa, Maria,Fylaktakidou, Konstantina C.
, p. 719 - 726 (2015/04/27)
O-Benzoyl derivatives of meta-, ortho- and para-pyridine aldoximes and amidoximes are novel efficient DNA photo-cleavage agents. In particular O-p-nitro-benzoyl derivatives 4, 8 and 15 were effective at concentrations as low as 1 μM. Both aldoximes and amidoximes were active under aerobic and anaerobic conditions, with a double-stranded to single-stranded DNA cleavage ratio of up to 1. These results give prospects for multiple applications, including phototherapeutic treatment of solid tumors. This journal is