Preparation of chitosan nanoparticles from shrimp shells and investigation of its catalytic effect in diastereoselective synthesis of dihydropyrroles

Abstract

Preparation of chitosan nanoparticles (CS-NPs) was examined from shrimp shells for their catalytic activity. The yield of crude chitosan was 87.8%. The structure of chitosan nanoparticles was determined by FT-IR, SEM and XRD analysis. Then, diastereoselective synthesis of dihydropyrroles was done using chitosan nanoparticles in water under ultrasonic irradiation. This polymeric nanocatalyst could be used instead of the old toxic commercial organic basic catalysts and could be readily isolated from the reaction mixture and recycled several times without significant loss of catalytic activity.

Efficacy of chitosan silver nanoparticles from shrimp-shell wastes against major mosquito vectors of public health importance

“…Thus, XRD showed that AgNPs were produced by the reduction of AgNO 3 with shrimp extract (Figure 4), where crystal structure well matched with earlier reports [15,51,57]. Furthermore, the crystalline nature of shrimp-derived chitosan nanoparticles was determined by the most intense diffraction peaks at values of 11.7 and 20.2° [58]. FTIR studies were conducted to reveal the probable chemicals contributing to the reduction of silver nanoparticles ( Figure 5).…”

Sustainable Design Approach for Modeling Bioprocesses from Laboratory toward Commercialization: Optimizing Chitosan Production

“…This component is the primary precursor of chitosan. Partial deacetylation of chitin was developed to obtain the product using sodium hydroxide [ 53 ].…”

Green sonosynthesis of phenazinpyrimidines using Co3O4/ZnO@N‐GQDs@SO3H nanocomposite as a robust heterogeneous catalyst

“…The facility of accomplishment multicomponent reactions with a recyclable catalyst under ultrasonic irradiation could advance the efficiency of organic reactions. [18] The ultrasonic energy shortens the reaction time and enhances the reaction rate. [19][20][21][22] Metal oxides have been widely utilized in diverse fields.…”