A new pathway to pyrrolo[1,2-a]quinoxalines via solvent-free one-pot strategy utilizing FeMoSe nanosheets as efficient recyclable synergistic catalyst

Iron sulfide clusters for annulation of 2-nitrobenzonitriles and benzylamines toward synthesis of 2-aryl-4-quinazolinones

“…Despite certain successes, general methods for synthesis of six-membered N-heterocycles are still rare. In our continuing efforts towards the combination of iron and main group elements for synthesis of heterocycles [7,8], herein we report our attempts to obtain 2-aryl-4-quinazolinones via an Fe/S-mediated annulation of 2-nitrobenzonitriles and benzylamines.…”

Molecularly Engineering Defective Basal Planes in Molybdenum Sulfide for the Direct Synthesis of Benzimidazoles by Reductive Coupling of Dinitroarenes with Aldehydes

“… 95 Later on, bimetallic iron molybdenum selenides were applied as catalysts for the preparation of pyrrolo[1,2- a ]quinoxalines from o -nitroanilines. 96 …”

“…95 Later on, bimetallic iron molybdenum selenides were applied as catalysts for the preparation of pyrrolo[1,2a]quinoxalines from o-nitroanilines. 96 In the meantime, nonpromoted MoS 2 -based materials have also been established as efficient catalysts for the reduction of nitroarenes in the presence of different reducing agents, such as hydrazine, 97,98 ammonium formate, 99 or sodium borohydride. 100,101 However, due to the inherent limited catalytic activity of these materials, several strategies were adopted to obtain catalysts with a high degree of active defect sites on both the edges and the typically unreactive basal planes.…”

“…In the following years, we prepared cobalt–molybdenum sulfides (Co–Mo–S) with tunable phase composition that displayed enhanced catalytic activity for the chemo- and regioselective hydrogenation of quinoline derivatives and for the borrowing hydrogen synthesis of thioethers from alcohols . Later on, bimetallic iron molybdenum selenides were applied as catalysts for the preparation of pyrrolo­[1,2- a ]­quinoxalines from o -nitroanilines …”

Questionable Recyclable Catalyst: Comment on “O-Acetyl-Substituted Phenol Ester Synthesis via Direct Oxidative Esterification Utilizing Ethers as an Acylating Source with Cu2(dhtp) Metal–Organic Framework as a Recyclable Catalyst”

“…It is related to the avoidance of hazardous toxic substances but not by replacing them by another toxic substance. I believe that the specialized term such as “recoverable catalyst” should be used only after a complete investigation of the feasibility and greenness of the whole recovery process, as compared to those of the disposable catalyst.…”