94546-35-7Relevant academic research and scientific papers
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.
, 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.
An efficient and recyclable nanoparticle-supported cobalt catalyst for quinoxaline synthesis
Rajabi, Fatemeh,Alves, Diego,Luque, Rafael
, p. 20709 - 20718 (2015/12/23)
The syntheses of quinoxalines derived from 1,2-diamine and 1,2-dicarbonyl compounds under mild reaction conditions was carried out using a nanoparticle-supported cobalt catalyst. The supported nanocatalyst exhibited excellent activity and stability and it
An efficient and one-pot synthesis of benzimidazoles, benzoxazoles, benzothiazoles and quinoxalines catalyzed via nano-solid acid catalysts
Teimouri, Abbas,Chermahini, Alireza Najafi,Salavati, Hossien,Ghorbanian, Leila
, p. 38 - 45 (2013/06/26)
A simple highly versatile and efficient synthesis of benzimidazoles, benzoxazoles, benzothiazoles, and quinoxalinesis achieved from carbonyl compounds and o-substituted aminoaromatics using nano-sulfated zirconia, nano-structured ZnO, nano-γ-alumina and nano-ZSM-5 zeolites, as the catalyst. The characteristic structural features of the materials were determined by techniques, such as XRD, FT-IR and SEM. The advantages of method are short reaction times and milder conditions and easy work-up. The catalysts can be recovered for the subsequent reactions and reused without any appreciable loss of efficiency.
A New Type of Reaction between o-Phenylenediamines and Aromatic Aldehydes to Give 2,3-Diarylquinoxalines
Ochoa, Carmen,Rodriguez, Juan
, p. 1053 - 1055 (2007/10/03)
A new type of reaction between o-phenylenediamines and aryl aldehydes at high temperature is reported. The synthesis of 2,3-diarylquinoxalines by this procedure is described.
