Metal nanoparticles receive tremendous interest as alternative catalysts in a quest to fill the gap between homogeneous and heterogeneous catalysis with selective and sophisticated reactions that occur in highly recyclable and scalable processes. In this area of research that is growing rapidly, we would like to focus on bimetallic nanoparticles and on how these particular materials have been used recently as nanocatalysts in fine‐chemicals synthesis and transformations. The synergistic effects observed with these nanocatalysts, either as nanoalloys or core–shell objects, that accounts for their superior activity and efficiency are discussed.

A lipase‐catalyzed acylation reaction of crude Haitian vetiver essential oil was studied as an alternative to chemical processes for the manufacture of an industrially relevant fragrance ingredient. A competitive process that involved a recyclable immobilized lipase at 10 % w/w was developed and used up to the kilogram scale and quantitatively delivered the target product with good productivity (up to 90 g L−1 h−1). With the support of comprehensive two‐dimensional gas chromatography/mass spectrometry (GC×GC–MS), it was found that the enzymatic reaction exhibited a high chemoselectivity in favor of primary sesquiterpene alcohols. This finding and its consequence on the olfactory properties were correlated with sensory analysis.