Three-Component Reaction between Isocyanides, Aliphatic Amines and Elemental Sulfur: Preparation of Thioureas under Mild Conditions with Complete­ Atom Economy

International audienc

Sodium Sulfide: A Sustainable Solution for Unbalanced Redox Condensation Reaction between o-Nitroanilines and Alcohols Catalyzed by an Iron–Sulfur System

International audienc

Iron Sulfide Catalyzed Redox/Condensation Cascade Reaction between 2-Amino/Hydroxy Nitrobenzenes and Activated Methyl Groups: A Straightforward Atom Economical Approach to 2-Hetaryl-benzimidazoles and -benzoxazoles.

International audienceIron sulfide generated in situ from elemental sulfur and iron was found to be highly efficient in catalyzing a redox/condensation cascade reaction between 2-amino/hydroxy nitrobenzenes and activated methyl groups. This method represents a straightforward and highly atom economical approach to 2-hetaryl-benzimidazoles and -benzoxazoles

Elemental sulfur disproportionation in the redox condensation reaction between o-halonitrobenzenes and benzylamines.

International audienceThe disproportionation of elemental sulfur at moderate temperatures is investigated in the redox condensation involving o-halonitrobenzenes 1 and benzylamines 2. As a redox moderator, elemental sulfur plays the dual role of both electron donor and acceptor, generating its lowest and highest oxidation states: S(-2) (sulfide equivalent) in benzothiazole 3 and S(+6) (sulfate equivalent) in sulfamate 4, and filling the electron gap of the global redox condensation process. Along with this process, a cascade of reactions of reduction of the nitro group of 1, oxidation of the aminomethyl group of 2, metal-free aromatic halogen substitution, and condensation finally led to 2-arylbenzothiazoles 3

Concise access to 2-aroylbenzothiazoles by redox condensation reaction between o-halonitrobenzenes, acetophenones, and elemental sulfur

International audienc

Molecular Iodine-Catalyzed Aerobic α,β-Diamination of Cyclohexanones with 2-Aminopyrimidine and 2-Aminopyridines

International audienc

Fe/S-catalyzed decarboxylative redox condensation of arylacetic acids with nitroarenes

International audienc

Elements as Direct Feedstocks for Organic Synthesis: Fe/I 2 /O 2 for Diamination of 2-Cyclohexenones with 2-Aminopyrimidine and 2-Aminopyridines

International audienc

Efficient and Selective Multicomponent Oxidative Coupling of Two Different Aliphatic Primary Amines into Thioamides by Elemental Sulfur

An efficient and selective multicomponent oxidative coupling of two different aliphatic primary amines into thioamides by elemental sulfur under solvent-free conditions has been developed