1609583-33-6

Upstream product

• 274-76-0 imidazo[1,2-a]pyridine 
• 98-80-6 phenylboronic acid 
• 1212-08-4 S-Phenyl benzenethiosulfonate 
• 873-55-2 sodium benzenesulfonate 
• 108-98-5 thiophenol 

Relevant academic research and scientific papers

Copper-catalyzed three-component reaction of imidazo[1,2-a]pyridine with elemental sulfur and arylboronic acid to produce sulfenylimidazo[1,2-a]pyridines

In this work, an efficient copper-catalyzed three-component reaction for the synthesis of sulfenylimidazo[1,2-a]pyridines using elemental sulfur as the sulfenylating agents has been developed. The reaction could proceed smoothly with a high degree of functional group tolerance and provide the desired products in moderate to good yield.

Visible-light-induced regioselective sulfenylation of imidazopyridines with thiols under transition metal-free conditions

A metal-free visible-light-promoted regioselective C-3 sulfenylation of imidazo[1,2-a]pyridines and indoles using thiols has been developed via C(sp2)-H functionalization. This method provides direct access to a wide range of structurally diver

Tandem Flavin-Iodine-Catalyzed Aerobic Oxidative Sulfenylation of Imidazo[1,2- a]Pyridines with Thiols

A green, aerobic sulfenylation of imidazo[1,2-a]pyridines was performed using thiols, a flavin-and-iodine dual catalytic system, and environmentally benign molecular oxygen as the only sacrificial reagent. The dual metal-free catalysts smoothly promote a unique stepwise tandem process, beginning with the aerobic oxidation of a thiol to afford a disulfide that is utilized in the oxidative sulfenylation of the imidazo[1,2-a]pyridine. This process has afforded diverse 3-sulfenylimidazo[1,2-a]pyridines of biological interest and is environmentally friendly, as benign H2O is the only byproduct.

Iodine-Mediated Difunctionalization of Imidazopyridines with Sodium Sulfinates: Synthesis of Sulfones and Sulfides

Novel iodine-induced sulfonylation and sulfenylation of imidazopyridines have been described using sodium sulfinates as the sulfur source. This strategy enables highly selective difunctionalization of imidazo[1,2-a]pyridine to access sulfones and sulfides in good yields. A wide range of substrates and functional groups were well-tolerated under optimized conditions. Moreover, control experiments have been conducted, indicating a radical pathway involved in the reaction mechanisms.

C3 Sulfenylation of N-Heteroarenes in Water under Catalyst-Free Conditions

A method for the catalyst-free C–H sulfenylation of imidazo[1,2-a]pyridines by using sulfonothioates as an odorless thioarylated reagent in aqueous medium was developed. This protocol was used for a variety of substituted imidazo[1,2-a]pyridines with broad functional-group tolerance and was extended to the sulfenylation of indoles and imidazothiazoles. The sulfonothioates were activated exclusively in aqueous medium rather than in an organic solvent, and the feasibility of the process for scale-up studies was demonstrated.

Iodine-triphenylphosphine mediated sulfenylation of imidazoheterocycles with sodium sulfinates

An efficient approach to sulfenyl imidazoheterocycles has been developed via iodine-triphenylphosphine mediated direct sulfenylation of imidazoheterocycles with sodium sulfinates. The reactions proceed smoothly under transition-metal-free conditions with a broad range of substrate scope, giving the desired products in moderate to excellent yields. This journal is

N-chlorosuccinimide-promoted regioselective sulfenylation of imidazoheterocycles at room temperature

Regioselective sulfenylation of imidazoheterocycles with thiophenols at room temperature is reported. Sulfenylation is promoted by N-chlorosuccinimide under metal-free conditions with a broad range of substrate scopes.