**3.2 Microwave-assisted catalytic acetylation of alcohols by gold-nanoparticle–supported gadolinium complex**

A gold nanoparticle (AuNP)– upheld gadolinium complex (RS-Au-L-Gd) impetus was set up through basic chelation of GdCl3 to the surface-bound spacer, 1,4,7-tris(carboxymethyl)-10-(11-mercaptoundecyl)-1,4,7,10-tetraazacyclododecane (HSDO3A). This AuNP-bolstered Gd complex was observed to be a profoundly viable impetus for the acetylation of different alcohols and phenol within the sight of acidic anhydride. With a stacking of 0.4 mol% of RS-Au-L-Gd, the practically complete change can be accomplished in 60 s under microwave light conditions. This half and half impetus was air stable, water solvent, dissolvable in numerous natural media, and precipitable. It very well may be promptly reused in excess of multiple times with no noteworthy loss of its synergist action [16].
