Herein, we report the synthesis of nickel nanoparticles under mild conditions using porous alginate--poly(-styrene sulfonamide--acrylamide) as a protecting/stabilizing agent and sodium borohydride as a reducing agent. The porous cross-linked polymeric support was prepared combining the use of sol-gel, nanocasting, and crosslinking techniques, in which the -styrene sulfonamide monomer (PSSA) and ,'-methylene-bis (acrylamide) (MBA) cross-linker underwent copolymerization on the surface of sodium alginate in the presence of a SiO nanoparticle (NP) template (Alg-PSSA--ACA). The prepared catalyst (Alg-PSSA--ACA@Ni) showed high catalytic activity for the one-step synthesis of 1,3,4-oxadiazoles from the reaction of hydrazides and aryl iodides through isocyanide insertion/cyclization.
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| http://dx.doi.org/10.1039/d1ra04022g | DOI Listing |
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