Application of Brown Cotton-Supported Palladium Nanoparticlesin Suzuki–Miyaura Cross-Coupling Reactions

A simple method was developed to deposit palladium (Pd) nanoparticles (NPs) within an inexpensive substrate, nonwoven brown cotton fabric, using naturally occurring polyphenols contained within the fabric as a reducing agent. The Pd NPs were imbedded within the fiber’s cross-sectional area. The Pd-impregnated substrate was applicable in a series of Suzuki–Miyaura cross-coupling reactions, wherein the product yields were affected by steric hindrance and aryl halide selection; para-substituted and iodoaryl reactants provided the greatest yields. The Pd NPs were catalytically active at submilliequivalent levels, retained catalytic activity for 10 experimental cycles, and did not leach into isolated products.