96919-45-8Relevant academic research and scientific papers
Mo–Catalyzed One-Pot Synthesis of N-Polyheterocycles from Nitroarenes and Glycols with Recycling of the Waste Reduction Byproduct. Substituent-Tuned Photophysical Properties
Hernández-Ruiz, Raquel,Rubio-Presa, Rubén,Suárez-Pantiga, Samuel,Pedrosa, María R.,Fernández-Rodríguez, Manuel A.,Tapia, M. José,Sanz, Roberto
supporting information, p. 13613 - 13623 (2021/08/23)
A catalytic domino reduction–imine formation–intramolecular cyclization–oxidation for the general synthesis of a wide variety of biologically relevant N-polyheterocycles, such as quinoxaline- and quinoline-fused derivatives, and phenanthridines, is reported. A simple, easily available, and environmentally friendly dioxomolybdenum(VI) complex has proven to be a highly efficient and versatile catalyst for transforming a broad range of starting nitroarenes involving several redox processes. Not only is this a sustainable, step-economical as well as air- and moisture-tolerant method, but also it is worth highlighting that the waste byproduct generated in the first step of the sequence is recycled and incorporated in the final target molecule, improving the overall synthetic efficiency. Moreover, selected indoloquinoxalines have been photophysically characterized in cyclohexane and toluene with exceptional fluorescence quantum yields above 0.7 for the alkyl derivatives.
Palladium-catalyzed decarboxylative C-H bond arylation of thiophenes
Hu, Peng,Zhang, Min,Jie, Xiaoming,Su, Weiping
supporting information; experimental part, p. 227 - 231 (2012/02/16)
An efficient method involving a Pd/PCy3 catalyst in combination with a stoichiometric amount of Ag2CO3 has been established for the decarboxylative C-H bond arylation of thiophenes to give 2-arylthiophenes (see scheme; Cy=
INTRAMOLECULAR DIAZO COUPLING OF 2-AMINOPHENYLTHIOPHENES. THE FORMATION OF ISOMERIC THIENOCINNOLINES
Barton, John W.,Lapham, David J.,Rowe, David J.
, p. 131 - 134 (2007/10/02)
Thieno- (4) and thieno-cinnolines (7) have been obtained by diazotisation and internal coupling of the corresponding 2-(o-aminophenyl)thiophenes.By the same reaction 3-(o-aminophenyl)-2,5-dimethylthiophene gives 1,3-dimethylthienolcinnoline (9).
