A rapid and practical green route for N-formylation of primary and secondary amines with formic acid at room temperature under the solvent-free conditions using HEU zeolite as a heterogeneous, reusable and highly efficient catalyst is described. The process is remarkably simple and environmentally benign. Excellent chemoselectivity was observed for the conversion of primary amines in the presence of secondary amines.

The stabilized palladium(0) nanoparticles by collagen fibres was a highly active, air-stable and recyclable heterogeneous catalyst that could be used for the Stille coupling reactions between aryl iodides and organostannanes under aerobic conditions. This method offered the several advantages: high yield under facile reaction condition and easy work-up procedure. The catalyst was easily recovered from the reaction mixture by filtration and reused multiple times without significant reduction or decrease in the activity.

The Pd(0) Nanoparticles Stabilized by Collagen Fibres as a Recyclable Heterogeneous Catalyst for the Stille Reaction under Aerobic Condition. -A new protocol for the Stille coupling of aryl iodides with organostannanes under aerobic conditions using a collagen fibre-supported Pd nanoparticle catalyst is developed. The catalyst can be easily recovered by filtration and reused multiple times without significant loss of activity. -(MOHAMMADI-AGHDAM*, B.; BAHARI, S.; MOLAEI, R.; J. Chem. Sci. (Bangalore, India) 125 (2013) 4, 813-817, http://dx.